View Filing Data

Asset retirement obligations

48,893

Other assets

71,751

68,166

Total assets

9,728,308

9,708,154

Current liabilities:

Accounts payable

193,190

227,344

5,485

Total current liabilities

371,795

475,848

Accrued interest

41,864

41,990

Derivative liabilities

1,297

4,144

613,631

754,811

Bank debt

885,286

932,018

Senior subordinated notes

2,858,445

2,856,166

48,724

48,677

Deferred tax liabilities

712,495

666,668

Derivative liabilities

1,478

3,462

Deferred compensation liabilities

62,431

67,542

Operating lease liabilities

39,897

Commitments and contingencies

323,668

319,379

Total liabilities

5,546,055

5,648,723

Stockholders’ Equity

Preferred stock, $1 par, 10,000,000 shares authorized, none issued and outstanding

Common stock, $0.01 par, 475,000,000 shares authorized, 251,353,635 issued at June 30, 2019 and 249,519,687 issued at December 31, 2018

2,514

2,495

Common stock held in treasury, 9,665 shares at June 30, 2019 and 9,665 shares at December 31, 2018

(391)

Additional paid-in capital

5,644,580

5,628,447

Accumulated other comprehensive loss

(538)

(658)

Retained deficit

(1,463,912)

(1,570,462)

Total stockholders’ equity

4,182,253

4,059,431

Total liabilities and stockholders’ equity

$ 9,728,308

$ 9,708,154

[1]	^{Includes capitalized asset retirement costs and the associated accumulated amortization.}

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts on accounts receivable	$ 6,121	$ 6,118
Preferred stock, par value	$ 1	$ 1
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	475,000,000	475,000,000
Common stock, shares issued	251,353,635	249,519,687
Common stock held in treasury, shares	9,665	9,665

CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues and other income:
Revenues and other income	$ 656,184,000	$ 759,474,000	$ 1,466,052,000	$ 1,516,082,000
Derivative fair value income (loss)	195,245,000	(103,290,000)	133,514,000	(117,299,000)
Total revenues and other income	851,429,000	656,184,000	1,599,566,000	1,398,783,000
Costs and expenses:
Production and ad valorem taxes	9,889,000	10,140,000	21,199,000	20,066,000
Brokered natural gas and marketing	101,117,000	102,747,000	233,422,000	158,341,000
Exploration	8,109,000	7,499,000	16,320,000	15,218,000
Abandonment and impairment of unproved properties	12,770,000	54,922,000	25,429,000	66,695,000
General and administrative	50,631,000	47,583,000	97,269,000	116,000,000
Termination costs	2,206,000	0	2,206,000	(37,000)
Deferred compensation plan	(11,142,000)	6,615,000	(7,561,000)	(782,000)
Interest	51,727,000	53,862,000	103,264,000	106,247,000
Depletion, depreciation and amortization	141,505,000	161,026,000	280,223,000	323,292,000
Impairment of proved properties	0	15,302,000	0	22,614,000
Gain on the sale of assets	(5,867,000)	(156,000)	(5,678,000)	(179,000)
Total costs and expenses	696,145,000	764,538,000	1,437,175,000	1,415,223,000
Income (loss) before income taxes	155,284,000	(108,354,000)	162,391,000	(16,440,000)
Income tax expense (benefit):
Current	0	0	0	0
Deferred	40,099,000	(28,518,000)	45,787,000	14,158,000
Total (benefit) expense for income taxes	40,099,000	(28,518,000)	45,787,000	14,158,000
Net income (loss)	$ 115,185,000	$ (79,836,000)	$ 116,604,000	$ (30,598,000)
Net income (loss) per common share:
Basic	$ 0.46	$ (0.32)	$ 0.46	$ (0.13)
Diluted	0.46	(0.32)	0.46	(0.13)
Dividends paid per common share	$ 0.02	$ 0.02	$ 0.04	$ 0.04
Weighted average common shares outstanding:
Basic	247,770	245,880	247,773	245,795
Diluted	248,436	245,880	249,042	245,795
Natural Gas, NGLs and Oil Sales
Revenues and other income:
Revenues and other income	$ 563,579,000	$ 661,390,000	$ 1,235,233,000	$ 1,358,019,000
Brokered Natural Gas, Marketing and Other
Revenues and other income:
Revenues and other income	92,605,000	98,084,000	230,819,000	158,063,000
Direct Operating
Costs and expenses:
Costs and expenses	33,981,000	35,088,000	67,208,000	73,210,000
Transportation, Gathering, Processing and Compression
Costs and expenses:
Costs and expenses	$ 301,219,000	$ 269,910,000	$ 603,874,000	$ 514,538,000

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 115,185	$ (79,836)	$ 116,604	$ (30,598)
Postretirement benefits:
Amortization of prior service cost	92	93	184	185
Amortization of actuarial gain	(12)		(24)
Income tax expense	(20)	(23)	(40)	(46)
Total comprehensive income (loss)	$ 115,245	$ (79,766)	$ 116,724	$ (30,459)

Industry Specific Policies [Abstract]

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Operating activities:
Net income (loss)	$ 116,604,000	$ (30,598,000)
Adjustments to reconcile net income (loss) to net cash provided from operating activities:
Deferred income tax expense	45,787,000	14,158,000
Depletion, depreciation and amortization and impairment	280,223,000	345,906,000
Exploration dry hole costs	0	2,000
Abandonment and impairment of unproved properties	25,429,000	66,695,000
Derivative fair value (income) loss	(133,514,000)	117,299,000
Cash settlements on derivative financial instruments	58,341,000	(5,350,000)
Allowance for doubtful accounts	0	(1,500,000)
Amortization of deferred financing costs and other	3,243,000	2,376,000
Deferred and stock-based compensation	13,727,000	34,167,000
Gain on the sale of assets	(5,678,000)	(179,000)
Changes in working capital:
Accounts receivable	201,428,000	(14,425,000)
Inventory and other	(5,035,000)	796,000
Accounts payable	(29,132,000)	14,615,000
Accrued liabilities and other	(125,907,000)	1,553,000
Net cash provided from operating activities	445,516,000	545,515,000
Investing activities:
Additions to natural gas and oil properties	(380,718,000)	(584,432,000)
Additions to field service assets	(697,000)	(1,863,000)
Acreage purchases	(31,920,000)	(37,900,000)
Proceeds from disposal of assets	34,366,000	366,000
Purchases of marketable securities held by the deferred compensation plan	(15,170,000)	(27,271,000)
Proceeds from the sales of marketable securities held by the deferred compensation plan	18,226,000	25,459,000
Net cash used in investing activities	(375,913,000)	(625,641,000)
Financing activities:
Borrowings on credit facilities	1,151,000,000	1,114,000,000
Repayments on credit facilities	(1,199,000,000)	(1,011,000,000)
Dividends paid	(10,049,000)	(9,960,000)
Taxes paid for shares withheld	(3,343,000)	(3,021,000)
Debt issuance costs	0	(8,257,000)
Change in cash overdrafts	(8,762,000)	(7,318,000)
Proceeds from the sales of common stock held by the deferred compensation plan	513,000	5,649,000
Net cash (used in) provided from financing activities	(69,641,000)	80,093,000
Decrease in cash and cash equivalents	(38,000)	(33,000)
Cash and cash equivalents at beginning of period	545,000	448,000
Cash and cash equivalents at end of period	$ 507,000	$ 415,000

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Common stock held in treasury	Additional Paid-in Capital	Retained (deficit)/earnings	Accumulated other comprehensive (loss) income
Beginning balance at Dec. 31, 2017	$ 5,774,272	$ 2,481	$ (599)	$ 5,577,732	$ 195,990	$ (1,332)
Beginning balance Shares at Dec. 31, 2017		248,144,000
Issuance of common stock	(1,217)	$ 11		(1,228)
Issuance of common stock, shares		1,092,000
Stock-based compensation expense	17,201			17,201
Cash dividends paid ($0.02 per share)	(4,971)				(4,971)
Treasury stock issuance			30	(30)
Other comprehensive income	69					69
Net income (loss)	49,238				49,238
Ending balance at Mar. 31, 2018	5,834,592	$ 2,492	(569)	5,593,675	240,257	(1,263)
Ending balance Shares at Mar. 31, 2018		249,236,000
Beginning balance at Dec. 31, 2017	5,774,272	$ 2,481	(599)	5,577,732	195,990	(1,332)
Beginning balance Shares at Dec. 31, 2017		248,144,000
Net income (loss)	(30,598)
Ending balance at Jun. 30, 2018	5,764,035	$ 2,494	(404)	5,607,707	155,432	(1,194)
Ending balance Shares at Jun. 30, 2018		249,437,000
Beginning balance at Dec. 31, 2017	5,774,272	$ 2,481	(599)	5,577,732	195,990	(1,332)
Beginning balance Shares at Dec. 31, 2017		248,144,000
Ending balance at Dec. 31, 2018	$ 4,059,431	$ 2,495	(391)	5,628,447	(1,570,462)	(658)
Ending balance Shares at Dec. 31, 2018	249,519,687	249,520,000
Beginning balance at Mar. 31, 2018	$ 5,834,592	$ 2,492	(569)	5,593,675	240,257	(1,263)
Beginning balance Shares at Mar. 31, 2018		249,236,000
Issuance of common stock	6,545	$ 2		6,543
Issuance of common stock, shares		201,000
Stock-based compensation expense	7,654			7,654
Cash dividends paid ($0.02 per share)	(4,989)				(4,989)
Treasury stock issuance			165	(165)
Other comprehensive income	69					69
Net income (loss)	(79,836)				(79,836)
Ending balance at Jun. 30, 2018	5,764,035	$ 2,494	(404)	5,607,707	155,432	(1,194)
Ending balance Shares at Jun. 30, 2018		249,437,000
Beginning balance at Dec. 31, 2018	$ 4,059,431	$ 2,495	(391)	5,628,447	(1,570,462)	(658)
Beginning balance Shares at Dec. 31, 2018	249,519,687	249,520,000
Issuance of common stock	$ (2,379)	$ 17		(2,396)
Issuance of common stock, shares		1,628,000
Issuance of common stock upon vesting of PSUs				4	(4)
Stock-based compensation expense	9,155			9,155
Cash dividends paid ($0.02 per share)	(5,023)				(5,023)
Other comprehensive income	60					60
Net income (loss)	1,419				1,419
Ending balance at Mar. 31, 2019	4,062,663	$ 2,512	(391)	5,635,210	(1,574,070)	(598)
Ending balance Shares at Mar. 31, 2019		251,148,000
Beginning balance at Dec. 31, 2018	$ 4,059,431	$ 2,495	(391)	5,628,447	(1,570,462)	(658)
Beginning balance Shares at Dec. 31, 2018	249,519,687	249,520,000
Net income (loss)	$ 116,604
Ending balance at Jun. 30, 2019	$ 4,182,253	$ 2,514	(391)	5,644,580	(1,463,912)	(538)
Ending balance Shares at Jun. 30, 2019	251,353,635	251,354,000
Beginning balance at Mar. 31, 2019	$ 4,062,663	$ 2,512	(391)	5,635,210	(1,574,070)	(598)
Beginning balance Shares at Mar. 31, 2019		251,148,000
Issuance of common stock	1,549	$ 2		1,547
Issuance of common stock, shares		206,000
Issuance of common stock upon vesting of PSUs				1	(1)
Stock-based compensation expense	7,822			7,822
Cash dividends paid ($0.02 per share)	(5,026)				(5,026)
Other comprehensive income	60					60
Net income (loss)	115,185				115,185
Ending balance at Jun. 30, 2019	$ 4,182,253	$ 2,514	$ (391)	$ 5,644,580	$ (1,463,912)	$ (538)
Ending balance Shares at Jun. 30, 2019	251,353,635	251,354,000

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) (Parenthetical) - $ / shares	3 Months Ended				6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement Of Stockholders Equity [Abstract]
Cash dividends paid per share	$ 0.02	$ 0.02	$ 0.02	$ 0.02	$ 0.04	$ 0.04

Summary of Organization and Nature of Business

6 Months Ended

Jun. 30, 2019

Summary of Organization and Nature of Business

(1) SUMMARY OF ORGANIZATION AND NATURE OF BUSINESS

Range Resources Corporation is a Fort Worth, Texas-based independent natural gas, natural gas liquids (“NGLs”) and oil company primarily engaged in the exploration, development and acquisition of natural gas and oil properties in the Appalachian and the North Louisiana regions of the United States. Our objective is to build stockholder value through consistent returns focused development, on a per share debt-adjusted basis, of both reserves and production on a cost-efficient basis. Range is a Delaware corporation with our common stock listed and traded on the New York Stock Exchange under the symbol “RRC”.

Basis of Presentation

6 Months Ended

Jun. 30, 2019

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Basis of Presentation

(2) BASIS OF PRESENTATION

These consolidated financial statements are unaudited but, in the opinion of management, reflect all adjustments necessary for fair presentation of the results for the periods presented. All adjustments are of a normal recurring nature unless otherwise disclosed. These consolidated financial statements, including selected notes, have been prepared in accordance with the applicable rules of the SEC and do not include all of the information and disclosures required by accounting principles generally accepted in the United States of America (“U.S. GAAP”) for complete financial statements.

These interim financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Range Resources Corporation 2018 Annual Report on Form 10-K filed with the Securities and Exchange Commission (the “SEC”) on February 25, 2019. The results of operations for the second quarter and the six months ended June 30, 2019 are not necessarily indicative of the results to be expected for the full year.

Inventory. As of June 30, 2019, we had $8.9 million of material and supplies inventory compared to $8.0 million at December 31, 2018. Material and supplies inventory consists of primarily tubular goods and equipment used in our operations and is stated at lower of specific cost of each inventory item or net realized value, on a first-in, first-out basis. At June 30, 2019, we also had commodity inventory of $1.4 million compared to $965,000 at December 31, 2018. Commodity inventory as of June 30, 2019 consists of NGLs held in storage or as line fill in pipelines.

New Accounting Standards

6 Months Ended

Jun. 30, 2019

New Accounting Pronouncements And Changes In Accounting Principles [Abstract]

New Accounting Standards

(3) NEW ACCOUNTING STANDARDS

Not Yet Adopted

Financial Instruments – Credit Losses

In June 2016, an accounting standards update was issued that changes the impairment model for trade receivables, net investments in leases, debt securities, loans and certain other instruments. The standards update requires the use of a forward-looking “expected loss” model as opposed to the current “incurred loss” model. This standards update is effective for us in first quarter 2020 and will be adopted on a modified retrospective basis through a cumulative-effect adjustment to retained earnings as of the beginning of the adoption period. Early adoption is permitted starting January 2019. We are evaluating the provisions of this accounting standards update and assessing the impact, if any, it may have on our consolidated results of operations, financial position and financial disclosures.

Fair Value Measurement

In August 2018, an accounting standards update was issued which provides additional disclosure requirements for fair value measurements. This new standards update eliminates the requirement to disclose transfers between Level 1 and Level 2 of the fair value hierarchy and provides for additional disclosures for Level 3 fair value measurements. This new standards update is effective for us in first quarter 2020 and will be adopted on a prospective or retrospective basis depending on the changes that apply. We are evaluating the provisions of this standards update and assessing the impact, if any, it may have on our financial disclosures.

Recently Adopted

Lease Accounting Standard

In February 2016, an accounting standards update was issued that requires an entity to recognize a right-of-use (“ROU”) asset and lease liability for all leases. Classification of leases as either a finance or operating lease determines the recognition, measurement and presentation of expenses. This accounting standards update also requires certain quantitative and qualitative disclosures about leasing arrangements.

The new standard was effective for us in first quarter 2019 and we adopted the new standard using a modified retrospective approach, with the date of initial application effective on January 1, 2019. Consequently, upon transition, we recognized a ROU asset (or operating lease right-of-use asset) and a lease liability with no retained earnings impact. We are applying the following practical expedients as provided in the standards update which provide elections to:

•

not apply the recognition requirements to short-term leases (a lease that at commencement date has a lease term of 12 months or less and does not contain a purchase option);

•

not reassess whether a contract contains a lease, lease classification and initial direct costs; and

•

not reassess certain land easements in existence prior to January 1, 2019.

Through our implementation process, we evaluated each of our lease arrangements and enhanced our systems to track and calculate additional information required upon adoption of this standards update. Our adoption did not have a material impact on our consolidated balance sheet as of January 1, 2019, with the primary impact relating to the recognition of ROU assets and operating lease liabilities for operating leases which represents approximately a 1% change to total assets and total liabilities. The impact of adoption of this new standards update was as follows (in thousands):


	January 1, 2019
		Adoption			Reclassification ⁽¹⁾			Total Adjustment
Balance Sheet:
Operating lease right-of-use assets	$	59,300		$	(7,925	)	$	51,375
Accrued liabilities – current	$	(14,811	)	$	—		$	(14,811	)
Operating lease liabilities – long-term	$	(44,489	)	$	—		$	(44,489	)
Asset retirement obligations and other liabilities	$	—		$	7,925		$	7,925

⁽¹⁾

^{As of December 31, 2018, we had $7.9 million of operating lease liabilities recorded as part of purchase price accounting for building leases acquired because we did not expect to occupy the space or receive payments from our subleases. Lease incentives related to other buildings were also included. Upon adoption of the new standards update, these leases were included as part of our adoption. The ROU asset is reduced because we do not expect to use the asset.}

Adoption of the new standard did not impact our consolidated statements of operations, cash flows or stockholders’ equity. Leases acquired to explore for or use minerals, oil or natural gas resources, including the right to explore for those natural resources and rights to use the land in which those natural resources are contained, are not within the scope of the standards update.

Revenue Recognition Standard

In May 2014, an accounting standards update was issued that superseded the existing revenue recognition requirements. This standard included a five-step revenue recognition model to depict the transfer of goods or services to customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those goods or services. Among other things, the standard also eliminated industry-specific revenue guidance, required enhanced disclosures about revenue, provided guidance for transactions that were not previously addressed comprehensively and improved guidance for multiple-element arrangements. This standard was effective for us in first quarter 2018 and we adopted the new standards update using the modified retrospective method to all open contracts as of January 1, 2018. Our implementation of this standard did not result in a cumulative-effect adjustment on date of adoption; however, our financial statement presentation related to revenue received from certain gas processing contracts changed. Based on previous accounting guidance, certain of our gas processing contracts were reported in revenue at the net price (net of processing costs) we receive. Upon adoption of this accounting standards update, these contracts are now reported as a gross price received at a delivery point and separate transportation, marketing and processing expense.

Pension Accounting Standard

In March 2017, an accounting standards update was issued which provides additional guidance on the presentation of net benefit cost in the statement of operations. Employers will present the service cost component of net periodic benefit cost in the same consolidated results of operations line item as other employee compensation costs arising from services rendered during the period. This new standards update was effective for annual reporting periods in first quarter 2018 and must be applied retrospectively. We adopted this standards update in first quarter 2018. The adoption did not impact our consolidated results of operations, financial position, cash flows or disclosures. In 2018 and 2019, our service cost is recorded in general and administrative expense.

Modification of Share – Based Awards

In May 2017, an accounting standards update was issued which clarifies what constitutes a modification of a share-based award. This standards update is intended to provide clarity and reduce both diversity in practice and cost and complexity to a change to the terms or conditions of a share-based payment award. We adopted this standards update in first quarter 2018. The adoption of this standard did not have a material impact on our consolidated financial position or results of operations.

Dispositions

6 Months Ended

Jun. 30, 2019

Business Combinations [Abstract]

Dispositions

(4) DISPOSITIONS

We recognized a pretax net gain of $5.9 million on the sale of assets in second quarter 2019 compared to a pretax net gain of $156,000 in second quarter 2018 and a pretax gain of $5.7 million in first six months 2019 compared to a pretax gain of $179,000 in first six months 2018. Also refer to Note 21 for information on asset disposition subsequent events.

2019 Dispositions

Pennsylvania. In second quarter 2019, we sold natural gas and oil property, primarily representing over 20,000 unproved acres, for proceeds of $34.0 million and recognized a pretax gain of $5.9 million.

Other. In second quarter 2019, we sold miscellaneous inventory and other assets for proceeds of $34,000, resulting in a pretax gain of $2,000. In first quarter 2019, we sold miscellaneous inventory and other assets for proceeds of $332,000, resulting in a pretax loss of $189,000.

2018 Dispositions

Other. In second quarter 2018, we sold miscellaneous inventory and other assets for proceeds of $326,000 resulting in a pretax gain of $156,000. In first quarter 2018, we sold miscellaneous inventory and other assets for proceeds of $40,000, resulting in a pretax loss of $23,000.

Revenues from Contracts with Customers

6 Months Ended

Jun. 30, 2019

Revenue From Contract With Customer [Abstract]

Revenues from Contracts with Customers

(5) REVENUES FROM CONTRACTS WITH CUSTOMERS

Revenue Recognition

Natural gas, NGLs and oil sales revenues are generally recognized when control of the product is transferred to the customer and collectability is reasonably assured.

Disaggregation of Revenue

We have three material revenue streams in our business: natural gas sales, NGLs sales and oil sales. Revenues on sales of natural gas, NGLs, oil and purchased natural gas and NGLs are recognized when control of the product is transferred to the purchaser and payment can be reasonably assured. Sales prices are negotiated based on factors normally considered in the industry, such as index or spot price, distance from the well to the pipeline or market, commodity quality and prevailing supply and demand conditions. We enter into purchase transactions with third parties and separate sale transactions to satisfy unused gas pipeline capacity commitments. Revenues and expenses from these transactions are presented on a gross basis as we act as a principal in the transaction by assuming control of the commodities purchased and the responsibility to deliver the commodities sold. The majority of our product sale commitments are short-term in nature with a contract term of one year or less. Our product sales that have a contractual term greater than one year have no long-term fixed consideration. Accounts receivable attributable to our revenue contracts with customers was $241.0 million at June 30, 2019 and $438.3 million at December 31, 2018. Revenue attributable to each of our identified revenue streams is disaggregated below (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
		2019		2018		2019		2018
Natural gas sales	$	343,623	$	360,351	$	778,343	$	791,924
NGLs sales		167,027		224,703		364,840		427,230
Oil sales		52,929		76,336		92,050		138,865
Total natural gas, NGLs and oil sales		563,579		661,390		1,235,233		1,358,019
Sales of purchased natural gas		88,004		93,433		222,805		149,294
Sales of purchased NGLs		1,184		729		1,608		1,033
Other marketing revenue		3,417		3,922		6,406		7,736
Total	$	656,184	$	759,474	$	1,466,052	$	1,516,082

Income Taxes

6 Months Ended

Jun. 30, 2019

Income Tax Disclosure [Abstract]

Income Taxes

(6) INCOME TAXES

We evaluate and update our annual effective income tax rate on a quarterly basis based on current and forecasted operating results and tax laws. Consequently, based upon the mix and timing of our actual earnings compared to annual projections, our effective tax rate may vary quarterly and may make comparisons not meaningful. Income tax expense (benefit) was as follows (in thousands):

		Three Months Ended June 30,					Six Months Ended June 30,
		2019			2018			2019			2018
Income tax expense (benefit)	$	40,099		$	(28,518)		$	45,787		$	14,158
Effective tax rate		25.8	%		26.3	%		28.2	%		(86.1	%)

Income taxes for discrete items are computed and recorded in the period that the specific transaction occurs. For three months and six months ended June 30, 2019 and 2018, our overall effective tax rate was different than the federal statutory rate due primarily to state income taxes (including adjustments to state income tax valuation allowances), equity compensation and other tax items which are detailed below (in thousands).

		Three Months Ended June 30,					Six Months Ended June 30,
		2019			2018			2019			2018
Total income (loss) before income taxes	$	155,284		$	(108,354	)	$	162,391		$	(16,440	)
U.S. federal statutory rate		21	%		21	%		21	%		21	%
Total tax expense (benefit) at statutory rate		32,610			(22,754	)		34,102			(3,452	)

State and local income taxes, net of federal benefit		5,725			(3,745	)		6,543			749
Equity compensation		497			1,476			3,888			2,140
Change in valuation allowances:
Federal net operating loss carryforwards		(916	)		—			(916	)		—
State net operating loss carryforwards and other		264			(2,042	)		616			13,636
Other		(532	)		18			(301	)		1,399
Permanent differences and other		2,451			(1,471	)		1,855			(314	)
Total expense (benefit) for income taxes	$	40,099		$	(28,518	)	$	45,787		$	14,158
Effective tax rate		25.8	%		26.3	%		28.2	%		(86.1	%)

Income (Loss) Per Common Share

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Income (Loss) Per Common Share

(7) INCOME (LOSS) PER COMMON SHARE

Basic income or loss per share attributable to common shareholders is computed as (1) income or loss attributable to common shareholders (2) less income allocable to participating securities (3) divided by weighted average basic shares outstanding. Diluted income or loss per share attributable to common shareholders is computed as (1) basic income or loss attributable to common shareholders (2) plus diluted adjustments to income allocable to participating securities (3) divided by weighted average diluted shares outstanding. The following sets forth a reconciliation of income or loss attributable to common shareholders to basic income or loss attributable to common shareholders to diluted income or loss attributable to common shareholders (in thousands, except per share amounts):

		Three Months Ended June 30,						Six Months Ended June 30,
		2019			2018			2019			2018
Net income (loss), as reported	$	115,185		$	(79,836	)	$	116,604		$	(30,598	)
Participating earnings ^(a)		(1,592	)		(69	)		(1,400	)		(126	)
Basic net income (loss) attributed to common shareholders		113,593			(79,905	)		115,204			(30,724	)
Reallocation of participating earnings ^(a)		4			—			6			—
Diluted net income (loss) attributed to common shareholders	$	113,597		$	(79,905	)	$	115,210		$	(30,724	)
Net loss per common share:
Basic	$	0.46		$	(0.32	)	$	0.46		$	(0.13	)
Diluted	$	0.46		$	(0.32	)	$	0.46		$	(0.13	)

^(a)

Restricted Stock Awards represent participating securities because they participate in nonforfeitable dividends or distributions with common equity owners. Income allocable to participating securities represents the distributed and undistributed earnings attributable to the participating securities. Participating securities, however, do not participate in undistributed net losses.

The following provides a reconciliation of basic weighted average common shares outstanding to diluted weighted average common shares outstanding (in thousands):

	Three Months Ended June 30,		Six Months Ended June 30,
	2019	2018		2019	2018
Weighted average common shares outstanding – basic	247,770	245,880		247,773	245,795
Effect of dilutive securities:
Director and employee restricted stock and performance based equity awards	666	—		1,269	—
Weighted average common shares outstanding – diluted	248,436	245,880		249,042	245,795

Weighted average common shares outstanding-basic for second quarter 2019 excludes 3.5 million shares of restricted stock held in our deferred compensation plan compared to 3.4 million shares in second quarter 2018 (although all awards are issued and outstanding upon grant). Weighted average common shares outstanding-basic for first six months 2019 excludes 3.0 million shares of restricted stock compared to 3.2 million for first six months 2018. For second quarter 2019, equity grants of 1.7 million were outstanding but not included in the computation of diluted net income per share because the grant prices were greater than the average market price of our common shares and would be anti-dilutive to the computations. For first six months 2019, equity grants of 1.6 million were outstanding but not included in the computations. Due to our net loss in the second quarter and first six months of 2018, all outstanding equity grants have been excluded from the computation of diluted net loss per share because the effect would have been anti-dilutive to the computations.

Leases

6 Months Ended

Jun. 30, 2019

Leases [Abstract]

Leases

(8) LEASES

We determine if an arrangement is a lease at inception of the arrangement. To the extent that we determine an arrangement represents a lease, we classify that lease as an operating lease or a finance lease. We currently do not have any finance leases. We capitalize our operating leases on our consolidated balance sheet through a ROU asset and a corresponding lease liability. ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Short-term leases that have an initial term of one year or less are not capitalized but are disclosed below. Short-term lease costs exclude expenses related to leases with a lease term of one month or less.

Our operating leases are reflected as operating lease ROU assets, accrued liabilities-current and operating lease liabilities on our consolidated balance sheet. Operating lease ROU assets and liabilities are recognized at the commencement date of an arrangement based on the present value of lease payments over the lease term. In addition to the present value of lease payments, the operating lease ROU asset also includes any lease payments made to the lessor prior to lease commencement less any lease incentives and initial direct costs incurred. Lease expense for operating lease payments is recognized on a straight-line basis over the lease term.

Nature of Leases

We lease certain office space, field equipment, vehicles and other equipment under cancelable and non-cancelable leases to support our operations. A more detailed description of our significant lease types is included below.

Office Agreements and Subleases

We rent office space from third parties for our corporate and field locations. Our office agreements are typically structured with non-cancelable terms of one to fifteen years. We have concluded our office agreements represent operating leases with a lease term that equals the primary non-cancelable contract term. Upon completion of the primary term, both parties have substantive rights to terminate the lease. As a result, enforceable rights and obligations do not exist under the rental agreements subsequent to the primary term.

We also sublease some of our office space to third parties. All of our subleases have terms that end in 2020 or 2022. The sublease agreements are non-cancelable through the end of the term and both parties have substantive rights to terminate the lease when the term is complete. Our sublease agreements are not capitalized and are recorded as sublease income (as a component of lease costs) in the period the rent is received.

Field Equipment

We rent compressors and coolers from third parties in order to facilitate the downstream movement of our production to market. Our compressor and cooler arrangements are typically structured with a non-cancelable primary term of one to two years and continue thereafter on a month-to-month basis subject to termination by either party with thirty days notice. We have concluded that our compressor and cooler rental agreements represent operating leases with a lease term that equals the primary non-cancelable contract term. Upon completion of the primary term, both parties have substantive rights to terminate the lease. As a result, enforceable rights and obligations do not exist under the rental agreement subsequent to the primary term.

We enter into daywork contracts for drilling rigs with third parties to support our drilling activities. Our drilling rig arrangements are typically structured with a term that is in effect until drilling operations are completed on a contractually specified well or well pad. Upon mutual agreement with the contractor, we typically have the option to extend the contract term for additional wells or well pads by providing thirty days notice prior to the end of the original contract term. We have concluded that our drilling rig arrangements represent short-term operating leases. The accounting guidance requires us to make an assessment at contract commencement if we are reasonably certain that we will exercise the option to extend the term. Due to the continuously evolving nature of our drilling schedules and the potential volatility in commodity prices in an annual period, our strategy to enter into shorter term drilling rig arrangements allows us the flexibility to respond to changes in our

operating and economic environment. We exercise our discretion in choosing to extend or not extend contracts on a rig by rig basis depending on the conditions present at the time the contract expires. At the time of contract commencement, we have determined we cannot conclude with reasonable certainty if we will choose to extend the contract beyond its original term. Pursuant to the successful efforts method of accounting, these costs are capitalized as part of natural gas and oil properties on our balance sheet when paid. See also short-term lease costs below.

Vehicles

We rent our vehicle fleet from a third party for our drilling and operations personnel. Our vehicle agreements are non-cancelable for a minimum of one year and a maximum term of four to eight years depending on the type of vehicle. However, we have assumed a term of three years based on the period covered by options to terminate that we are reasonably certain to exercise. We have concluded our vehicle commitments are operating leases.

Significant Judgments

Transportation, Gathering and Processing Arrangements

We engage in various types of transactions in which midstream entities transport, gather and/or process our product leveraging integrated systems and facilities wholly owned and operated by the midstream counterparty. Under most of these arrangements, we do not utilize substantially all of the underlying pipeline, gathering system or processing facilities, and thus, we have concluded that those underlying assets do not meet the definition of an identified asset. However, in limited circumstances, we do utilize substantially all of the capacity of a portion of the midstream system under our transportation gathering and/or processing service contract. These arrangements require judgment to determine whether our capacity of the underlying midstream asset represents a lease. Under all of these arrangements, we have concluded that (i) the midstream entity maintains control of and has the ability to optimize and/or expand the underlying system throughout the duration of the contract term and (ii) the portion of the system or facility we utilize is highly integrated and interconnected to a broader system servicing a diverse set of customers. Consequently, the transportation, gathering and/or processing contract does not represent a lease of the underlying portion of the midstream system or facilities. We currently have not identified any of these commitments as leases.

Discount Rate

Our leases typically do not provide an implicit rate. Accordingly, we are required to use our incremental borrowing rate in determining the present value of lease payments based on the information available at commencement date. Our incremental borrowing rate reflects the estimated rate of interest that we would pay to borrow on a collateralized basis over a similar term in an amount equal to the lease payments in a similar economic environment. We use the implicit rate in the limited circumstances in which that rate is readily determinable.

Practical Expedients and Accounting Policy Elections

Certain of our lease agreements include lease and non-lease components. For all existing asset classes with multiple component types, we have utilized the practical expedient that exempts us from separating lease components from non-lease components. Accordingly, we account for the lease and non-lease components in an arrangement as a single lease component.

In addition, for all of our existing asset classes, we have made an accounting policy election not to apply the lease recognition requirements to our short-term leases (that is, a lease that, at commencement, has a lease term of 12 months or less and does not include an option to purchase the underlying asset that we are reasonably certain to exercise). Accordingly, we recognize lease payments related to our short-term leases in our statement of operations on a straight-line basis over the lease term which has not changed from our prior recognition. To the extent that there are variable lease payments, we recognize those payments in our statement of operations in the period in which the obligation for those payments is incurred. Refer to “Nature of Leases” above for further information regarding those asset classes that include material short-term leases.

The components of our total lease expense for the three and six months ended June 30, 2019, the majority of which is included in general and administrative expense, are as follows (in thousands):

	Three Months Ended June 30, 2019			Six Months Ended June 30, 2019

Operating lease cost	$	3,208		$	6,288
Variable lease expense ⁽¹⁾		1,203			2,354
Short-term lease expense ⁽²⁾		687			1,170
Sublease income		(873	)		(1,748	)
Total lease expense	$	4,225		$	8,064

Short-term lease costs ⁽³⁾	$	8,319		$	17,093

⁽¹⁾

^{Variable lease payments that are not dependent on an index or rate are not included in the lease liability or ROU assets.}

⁽²⁾

^{Short-term lease expense represents expense related to leases with a contract term of one year or less.}

⁽³⁾

^{These short-term lease costs are related to leases with a contract term of one year or less and the majority of which are related to drilling rigs and are capitalized as part of natural gas and oil properties on our balance sheets.}

Supplemental cash flow information related to our operating leases is included in the table below (in thousands):

Six Months

Ended

June 30,

2019

Cash paid for amounts included in the measurement of lease liabilities

7,533

ROU assets added in exchange for lease obligations (since adoption)

2,096

Supplemental balance sheet information related to our operating leases is included in the table below (in thousands):

		June 30, 2019
Operating lease ROU assets	$	48,893
Accrued liabilities – current	$	(15,671	)
Operating lease liabilities – long-term	$	(39,897	)

Our weighted average remaining lease term and weighted average discount rate for our operating leases are as follows:

June 30,

2019

Weighted average remaining lease term

6.2 years

Weighted average discount rate

6.2%

Our lease liabilities with enforceable contract terms that are greater than one year mature as follows (in thousands):

		Operating Leases
Remainder of 2019	$	7,831
2020		14,397
2021		10,906
2022		6,991
2023		6,500
Thereafter		21,730
Total lease payments		68,355
Less effects of discounting		(12,787	)
Total lease liability	$	55,568

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization

6 Months Ended

Jun. 30, 2019

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization

(9) Capitalized Costs and Accumulated Depreciation, Depletion and Amortization ^(a)

	June 30, 2019			December 31, 2018
	(in thousands)
Natural gas and oil properties:
Properties subject to depletion	$	10,962,361		$	10,974,929
Unproved properties		2,069,962			2,110,277
Total		13,032,323			13,085,206
Accumulated depreciation, depletion and amortization		(3,911,646	)		(4,062,021	)
Net capitalized costs	$	9,120,677		$	9,023,185

^(a)	^{Includes capitalized asset retirement costs and the associated accumulated amortization.}

Indebtedness

6 Months Ended

Jun. 30, 2019

Debt Disclosure [Abstract]

Indebtedness

(10) INDEBTEDNESS

We had the following debt outstanding as of the dates shown below (bank debt interest rate at June 30, 2019 is shown parenthetically). No interest was capitalized during the three and six months ended June 30, 2019 or the year ended December 31, 2018 (in thousands).


		June 30, 2019			December 31, 2018
Bank debt (3.9%)	$	895,000		$	943,000
Senior notes:
4.875% senior notes due 2025		750,000			750,000
5.00% senior notes due 2023		741,531			741,531
5.00% senior notes due 2022		580,032			580,032
5.75% senior notes due 2021		475,952			475,952
5.875% senior notes due 2022		329,244			329,244
Other senior notes due 2022		590			590
Total senior notes		2,877,349			2,877,349
Senior subordinated notes:
5.00% senior subordinated notes due 2023		7,712			7,712
5.00% senior subordinated notes due 2022		19,054			19,054
5.75% senior subordinated notes due 2021		22,214			22,214
Total senior subordinated notes		48,980			48,980
Total debt		3,821,329			3,869,329
Unamortized premium		4,070			4,741
Unamortized debt issuance costs		(32,944	)		(37,209	)
Total debt net of debt issuance costs	$	3,792,455		$	3,836,861

Bank Debt

In April 2018, we entered into an amended and restated revolving bank facility, which we refer to as our bank debt or our bank credit facility, which is secured by substantially all of our assets and has a maturity date of April 13, 2023. The bank credit facility provides for a maximum facility amount of $4.0 billion and an initial borrowing base of $3.0 billion. The bank credit facility also provides for a borrowing base subject to redeterminations annually by May and for event-driven unscheduled redeterminations. As part of our annual redetermination completed on March 27, 2019, our borrowing base was reaffirmed for $3.0 billion and our bank commitment was also reaffirmed at $2.0 billion. As of June 30, 2019, our bank group was composed of twenty-seven financial institutions with no one bank holding more than 5.8% of the total facility. The borrowing base may be increased or decreased based on our request and sufficient proved reserves, as determined by the bank group. The commitment amount may be increased to the borrowing base, subject to payment of a mutually acceptable commitment fee to those banks agreeing to participate in the facility increase. On June 30, 2019, bank commitments totaled $2.0 billion and the outstanding balance under our bank credit facility was $895.0 million, before deducting debt issuance costs. Additionally, we had $282.7 million of undrawn letters of credit leaving $822.3 million of committed borrowing capacity available under the facility. During a non-investment grade period, borrowings under the bank credit facility can either be at the alternate base rate (“ABR,” as defined in the bank credit facility agreement) plus a spread ranging from 0.25% to 1.25% or LIBOR borrowings at the LIBOR Rate (as defined in the bank credit facility agreement) plus a spread ranging from 1.25% to 2.25%. The applicable spread is dependent upon borrowings relative to the borrowing base. We may elect, from time to time, to convert all or any part of our LIBOR loans to base rate loans or to convert all or any of the base rate loans to LIBOR

loans. The weighted average interest rate was 4.0% for second quarter 2019 compared to 3.7% for second quarter 2018. The weighted average interest rate was 4.0% for first six months 2019 compared to 3.5% for first six months 2018. A commitment fee is paid on the undrawn balance based on an annual rate of 0.30% to 0.375%. At June 30, 2019, the commitment fee was 0.30% and the interest rate margin was 1.50% on our LIBOR loans and 0.50% on our base rate loans.

At any time during which we have an investment grade debt rating from Moody’s Investors Service, Inc. or Standard & Poor’s Ratings Services and we have elected, at our discretion, to effect the investment grade rating period, certain collateral security requirements, including the borrowing base requirement and restrictive covenants, will cease to apply and an additional financial covenant (as defined in the bank credit facility) will be imposed. During the investment grade period, borrowings under the credit facility can either be at the ABR plus a spread ranging from 0.125% to 0.75% or at the LIBOR Rate plus a spread ranging from 1.125% to 1.75% depending on our debt rating. The commitment fee paid on the undrawn balance would range from 0.15% to 0.30%. We currently do not have an investment grade debt rating.

Senior Notes and Senior Subordinated Notes

If we experience a change of control, noteholders may require us to repurchase all or a portion of our senior notes and senior subordinated notes at 101% of the aggregate principal amount plus accrued and unpaid interest, if any. All of the senior subordinated notes and the guarantees by our subsidiary guarantors are general, unsecured obligations and are subordinated to our bank debt and to existing and future senior debt that we or our subsidiary guarantors are permitted to incur.

Guarantees

Range is a holding company which owns no operating assets and has no significant operations independent of its subsidiaries. The guarantees by our subsidiaries, which are directly or indirectly owned by Range, of our senior notes, senior subordinated notes and our bank credit facility are full and unconditional and joint and several, subject to certain customary release provisions. A subsidiary guarantor may be released from its obligations under the guarantee:

•

in the event of a sale or other disposition of all or substantially all of the assets of the subsidiary guarantor or a sale or other disposition of all the capital stock of the subsidiary guarantor, to any corporation or other person (including an unrestricted subsidiary of Range) by way of merger, consolidation, or otherwise; or

•

if Range designates any restricted subsidiary that is a guarantor to be an unrestricted subsidiary in accordance with the terms of the indenture.

Debt Covenants

Our bank credit facility contains negative covenants that limit our ability, among other things, to pay cash dividends, incur additional indebtedness, sell assets, enter into certain hedging contracts, change the nature of our business or operations, merge, consolidate or make certain investments. In addition, we are required to maintain a ratio of EBITDAX (as defined in the bank credit facility agreement) to cash interest expense of equal to or greater than 2.5 and a current ratio (as defined in the bank credit facility agreement) of no less than 1.0. In addition, the ratio of the present value of proved reserves (as defined in the credit agreement) to total debt must be equal to or greater than 1.5 until Range has two investment grade ratings. We were in compliance with applicable covenants under the bank credit facility at June 30, 2019.

Asset Retirement Obligations

6 Months Ended

Jun. 30, 2019

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligations

(11) ASSET RETIREMENT OBLIGATIONS

Our asset retirement obligations primarily represent the estimated present value of the amounts we will incur to plug, abandon and remediate our producing properties at the end of their productive lives. Significant inputs used in determining such obligations include estimates of plugging and abandonment costs, estimated future inflation rates and well lives. The inputs are calculated based on historical data as well as current estimated costs. A reconciliation of our liability for plugging and abandonment costs for the six months ended June 30, 2019 and the year ended December 31, 2018 is as follows (in thousands):

	Six Months Ended June 30, 2019			Year Ended December 31, 2018
Beginning of period	$	312,754		$	276,855
Liabilities incurred		2,529			3,376
Acquisitions		—			13,438
Liabilities settled		(2,582	)		(5,052	)
Disposition of wells		—			(13,332	)
Accretion expense		8,487			25,456
Change in estimate		(203	)		12,013
End of period		320,985			312,754
Less current portion		(5,485	)		(5,485	)
Long-term asset retirement obligations	$	315,500		$	307,269

Accretion expense is recognized as a component of depreciation, depletion and amortization expense in the accompanying consolidated statements of operations.

Derivative Activities

6 Months Ended

Jun. 30, 2019

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Derivative Activities

(12) DERIVATIVE ACTIVITIES

We use commodity-based derivative contracts to manage exposure to commodity price fluctuations. We do not enter into these arrangements for speculative or trading purposes. We utilize commodity swaps, collars, calls or swaptions to (1) reduce the effect of price volatility of the commodities we produce and sell and (2) support our annual capital budget and expenditure plans. The fair value of our derivative contracts, represented by the estimated amount that would be realized upon termination, based on a comparison of the contract price and a reference price, generally the New York Mercantile Exchange (“NYMEX”) for natural gas and crude oil or Mont Belvieu for NGLs, approximated a net gain of $162.7 million at June 30, 2019. These contracts expire monthly through December 2020. The following table sets forth our commodity-based derivative volumes by year as of June 30, 2019, excluding our basis and freight swaps which are discussed separately below:

Period	Contract Type	Volume Hedged	Weighted Average Hedge Price
Natural Gas
2019	Swaps	1,262,473 Mmbtu/day		$ 2.81
2020	Swaps	305,000 Mmbtu/day		$ 2.76
2019	Swaptions	150,000 Mmbtu/day		$ 2.81 ⁽¹⁾
2020	Swaptions	177,568 Mmbtu/day		$ 2.78 ⁽¹⁾
November – December 2019	Swaptions	20,000 Mmbtu/day		$ 3.20 ⁽¹⁾
January – March 2020	Swaptions	20,000 Mmbtu/day		$ 3.20 ⁽¹⁾

Crude Oil
2019	Swaps	8,750 bbls/day		$ 55.89
2020	Swaps	4,617 bbls/day		$ 60.48
2019	Collars	1,000 bbls/day		$ 63.00 − $ 73.00

NGLs (C5-Natural Gasoline)
2019	Swaps	4,500 bbls/day		$ 1.36/gallon

⁽¹⁾

Contains a combined derivative instrument consisting of a fixed price swap and a sold option to extend or double the volumes. We have swaps in place for 2019 for 150,000 Mmbtu/day on which the counterparty can elect to extend the contract through December 2020 at a weighted average price of $2.81. In addition, we have swaps in place for November and December 2019 where, if the counterparty elects to double the volume, we would have additional swaps in place for 20,000 Mmbtu/day at a weighted average price of $3.20. In 2020, if the counterparty elects to double the volume, we would have additional swaps in place for 140,000 Mmbtu/day at a weighted average price of $2.78. We also have swaps in place for 2020 for 50,000 Mmbtu/day on which the counterparty can elect to extend the contract through December 2021 at a weighted average price of $2.75. In addition, for January through March 2020, we have additional swaps in place where if the counterparty elects to double the volume, we would have an additional 20,000 Mmbtu/day at a weighted average price of $3.20.

Every derivative instrument is required to be recorded on the balance sheet as either an asset or a liability measured at its fair value. We recognize all changes in fair value of these derivatives as earnings in derivative fair value income or loss in the periods in which they occur.

Basis Swap Contracts

In addition to the swaps, collars and swaptions described above, at June 30, 2019, we had natural gas basis swap contracts which lock in the differential between NYMEX Henry Hub and certain of our physical pricing indices. These contracts settle monthly through October 2021 and include a total volume of 107,960,000 Mmbtu. The fair value of these contracts was a loss of $2.0 million at June 30, 2019.

At June 30, 2019, we also had propane spread swap contracts which lock in the differential between Mont Belvieu and international propane indices. The contracts settle monthly in October through December of 2019 and monthly in 2020 and include a total volume of 1,875,000 barrels. The fair value of these contracts was a loss of $1.8 million at June 30, 2019.

Freight Swap Contracts

In connection with our international propane sales, we utilize propane swaps. To further hedge our propane price, at June 30, 2019, we had freight swap contracts on the Baltic Exchange which lock in the freight rate for a specific trade route. These contracts settle monthly through December 2019 and cover 10,000 metric tons per month with a fair value gain of $1.5 million at June 30, 2019.

Derivative Assets and Liabilities

The combined fair value of derivatives included in the accompanying consolidated balance sheets as of June 30, 2019 and December 31, 2018 is summarized below. The assets and liabilities are netted where derivatives with both gain and loss positions are held by a single counterparty and we have master netting arrangements. The tables below provide additional information relating to our master netting arrangements with our derivative counterparties (in thousands):

		June 30, 2019
		Gross Amounts of Recognized Assets		Gross Amounts Offset in the Balance Sheet			Net Amounts of Assets Presented in the Balance Sheet
Derivative assets:
Natural gas	–swaps	$	128,392	$	(2,132	)	$	126,260
	–swaptions		29,982		(6,070	)		23,912
	–basis swaps		1,220		(1,305	)		(85	)
Crude oil	–swaps		8,459		(4,932	)		3,527
	−collars		1,116		—			1,116
NGLs	–C3 propane spread swaps		6,815		(7,767	)		(952	)
	−C5 natural gasoline swaps		7,857		—			7,857
Freight	−swaps		1,501		—			1,501
		$	185,342	$	(22,206	)	$	163,136

		June 30, 2019
		Gross Amounts of Recognized (Liabilities)			Gross Amounts Offset in the Balance Sheet		Net Amounts of (Liabilities) Presented in the Balance Sheet
Derivative (liabilities):
Natural gas	–swaps	$	(2,132	)	$	2,132	$	—
	–swaptions		(6,070	)		6,070		—
	–basis swaps		(3,255	)		1,305		(1,950	)
Crude oil	–swaps		(4,932	)		4,932		—
NGLs	–C3 propane spread swaps		(8,592	)		7,767		(825	)
		$	(24,981	)	$	22,206	$	(2,775	)

		December 31, 2018
		Gross Amounts of Recognized Assets		Gross Amounts Offset in the Balance Sheet			Net Amounts of Assets Presented in the Balance Sheet
Derivative assets:
Natural gas	–swaps	$	20,834	$	(11,748	)	$	9,086
	–swaptions		5,200		(3,883	)		1,317
	–basis swaps		6,468		(2,822	)		3,646
Crude oil	–swaps		26,481		(651	)		25,830
	–collars		5,945		(707	)		5,238
NGLs	–C3 propane swaps		18,719		(589	)		18,130
	–C3 propane collars		8,538		—			8,538
	–C3 propane spread swaps		8,984		(8,868	)		116
	–NC4 butane swaps		4,084		—			4,084
	–C5 natural gasoline swaps		17,371		—			17,371
Freight	–swaps		—		(561	)		(561	)
		$	122,624	$	(29,829	)	$	92,795

		December 31, 2018
		Gross Amounts of Recognized (Liabilities)			Gross Amounts Offset in the Balance Sheet		Net Amounts of (Liabilities) Presented in the Balance Sheet
Derivative (liabilities):
Natural gas	–swaps	$	(18,332	)	$	11,748	$	(6,584	)
	–swaptions		(7,972	)		3,883		(4,089	)
	–basis swaps		(1,702	)		2,822		1,120
Crude oil	–swaps		—			651		651
	–collars		—			707		707
NGLs	–C3 propane swaps		—			589		589
	–C3 propane spread swaps		(8,868	)		8,868		—
Freight	–swaps		(561	)		561		—
		$	(37,435	)	$	29,829	$	(7,606	)

The effects of our derivatives on our consolidated statements of operations are summarized below (in thousands):

	Derivative Fair Value Income (Loss)
		Three Months Ended June 30,					Six Months Ended June 30,
		2019		2018			2019			2018
Commodity swaps	$	159,128	$	(91,195	)	$	101,710		$	(107,730	)
Swaptions		32,383		(6,592	)		29,092			(2,993	)
Collars		578		11			(3,946	)		(66	)
Calls		—		152			—			329
Basis swaps		938		(5,828	)		4,353			(6,693	)
Freight swaps		2,218		162			2,305			(146	)
Total	$	195,245	$	(103,290	)	$	133,514		$	(117,299	)

Fair Value Measurements

6 Months Ended

Jun. 30, 2019

Fair Value Disclosures [Abstract]

Fair Value Measurements

(13) FAIR VALUE MEASUREMENTS

Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. There are three approaches for measuring the fair value of assets and liabilities: the market approach, the income approach and the cost approach, each of which includes multiple valuation techniques. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities. The income approach uses valuation techniques to measure fair value by converting future amounts, such as cash flows or earnings, into a single present value amount using current market expectations about those future amounts. The cost approach is based on the amount that would currently be required to replace the service capacity of an asset. This is often referred to as current replacement cost. The cost approach assumes that the fair value would not exceed what it would cost a market participant to acquire or construct a substitute asset of comparable utility, adjusted for obsolescence.

The fair value accounting standards do not prescribe which valuation technique should be used when measuring fair value and do not prioritize among the techniques. These standards establish a fair value hierarchy that prioritizes the inputs used in applying the various valuation techniques. Inputs broadly refer to the assumptions that market participants use to make pricing decisions, including assumptions about risk. Level 1 inputs are given the highest priority in the fair value hierarchy while Level 3 inputs are given the lowest priority. The three levels of the fair value hierarchy are as follows:

•

Level 1 – Observable inputs that reflect unadjusted quoted prices for identical assets or liabilities in active markets as of the reporting date. Active markets are those in which transactions for the asset or liability occur in sufficient frequency and volume to provide pricing information on an ongoing basis.

•

Level 2 – Observable market-based inputs or unobservable inputs that are corroborated by market data. These are inputs other than quoted prices in active markets included in Level 1, which are either directly or indirectly observable as of the reporting date.

•

Level 3 – Unobservable inputs for which there is little, if any, market activity for the asset or liability being measured. These inputs reflect management’s best estimates of the assumptions market participants would use in determining fair value. Our Level 3 measurements consist of instruments using standard pricing models and other valuation methods that utilize unobservable pricing inputs that are significant to the overall fair value.

Valuation techniques that maximize the use of observable inputs are favored. Assets and liabilities are classified in their entirety based on the lowest priority level of input that is significant to the fair value measurement. The assessment of the significance of a particular input to the fair value measurement requires judgment and may affect the placement of assets and liabilities within the levels of the fair value hierarchy.

Significant uses of fair value measurements include:

•

impairment assessments of long-lived assets; and

•

recorded value of derivative instruments and trading securities.

The need to test long-lived assets can be based on several indicators, including a significant reduction in prices of natural gas, oil and condensate, NGLs, unfavorable adjustments to reserves, significant changes in the expected timing of production, other changes to contracts or changes in the regulatory environment in which a property is located.

Fair Values – Recurring

We use a market approach for our recurring fair value measurements and endeavor to use the best information available. The following tables present the fair value hierarchy table for assets and liabilities measured at fair value, on a recurring basis (in thousands):

	Fair Value Measurements at June 30, 2019 using:
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)		Total Carrying Value as of June 30, 2019
Trading securities held in the deferred compensation plans	$	60,697	$	—		$	—		$	60,697

Derivatives –swaps		—		137,644			—			137,644
–collars		—		1,116			—			1,116
–basis swaps		—		(3,812	)		—			(3,812	)
–freight swaps		—		1,501			—			1,501
–swaptions		—		—			23,912			23,912

	Fair Value Measurements at December 31, 2018 using:
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)			Total Carrying Value as of December 31, 2018
Trading securities held in the deferred compensation plans	$	57,293	$	—		$	—		$	57,293
Derivatives –swaps		—		69,156			—			69,156
–collars		—		5,945			8,538			14,483
–basis swaps		—		4,883			—			4,883
–freight swaps		—		(561	)		—			(561	)
–swaptions		—		—			(2,772	)		(2,772	)

Our trading securities in Level 1 are exchange-traded and measured at fair value with a market approach using end of period market values. Derivatives in Level 2 are measured at fair value with a market approach using third-party pricing services which have been corroborated with data from active markets or broker quotes. As of June 30, 2019, a portion of our natural gas derivative instruments contains swaptions where the counterparty has the right, but not the obligation, to enter into a fixed price swap on a pre-determined date. Derivatives in Level 3 are measured at fair value with a market approach using third-party pricing services which have been corroborated with data from active markets or broker quotes. Subjectivity in the volatility factors utilized can cause a significant change in the fair value measurement of our swaptions. The following is a reconciliation of the beginning and ending balances for derivative instruments classified as Level 3 in the fair value hierarchy (in thousands):

	As of June 30, 2019
Balance at December 31, 2018	$	5,766
Total gains:
Included in earnings		28,338
Settlements, net		(10,192	)
Balance at June 30, 2019	$	23,912

Our trading securities held in the deferred compensation plan are accounted for using the mark-to-market accounting method and are included in other assets in the accompanying consolidated balance sheets. We elected to adopt the fair value option to simplify our accounting for the investments in our deferred compensation plan. Interest, dividends, and mark-to-market gains or losses are included in deferred compensation plan expense in the accompanying consolidated statements of operations. For second quarter 2019, interest and dividends were $184,000 and the mark-to-market adjustment was a gain of $1.5 million compared to interest and dividends of $213,000 and a mark-to-market gain of $324,000 in second quarter 2018. For first six months 2019, interest and dividends were $363,000 and the mark-to-market adjustment was a gain of $6.6 million compared to interest and dividends of $381,000 and a mark-to-market loss of $798,000 in the same period of the prior year.

Fair Values – Non-recurring

Our proved natural gas and oil properties are reviewed for impairment periodically as events or changes in circumstances indicate the carrying amount may not be recoverable. In first quarter 2018, there were indicators that the carrying value of certain of our oil and natural gas properties in Oklahoma may be impaired and undiscounted future cash flows attributed to these assets indicated their carrying amounts were not expected to be recovered. Their remaining fair value was measured using a market approach based upon the potential sale of these Oklahoma properties, which is a Level 3 input. We recorded non-cash charges in first quarter 2018 of $7.3 million related to these properties of which the fair value was determined to be $32.5 million. In second quarter 2018, we recorded impairment of $15.3 million related to certain shallow legacy oil and natural gas assets in Northwest Pennsylvania where we had increased our working interest during the quarter. The fair value of these assets had previously been determined to be zero. There were no impairment charges in first or second quarter 2019.

Fair Values – Reported

The following presents the carrying amounts and the fair values of our financial instruments as of June 30, 2019 and December 31, 2018 (in thousands):

	June 30, 2019						December 31, 2018
	Carrying Value			Fair Value			Carrying Value			Fair Value
Assets:
Commodity swaps, options and basis swaps	$	163,136		$	163,136		$	92,795		$	92,795
Marketable securities ^(a)		60,697			60,697			57,293			57,293
(Liabilities):
Commodity swaps, options and basis swaps		(2,775	)		(2,775	)		(7,606	)		(7,606	)
Bank credit facility ^(b)		(895,000	)		(895,000	)		(943,000	)		(943,000	)
5.75% senior notes due 2021 ^(b)		(475,952	)		(480,336	)		(475,952	)		(455,972	)
5.00% senior notes due 2022 ^(b)		(580,032	)		(553,948	)		(580,032	)		(519,343	)
5.875% senior notes due 2022 ^(b)		(329,244	)		(328,819	)		(329,244	)		(305,989	)
Other senior notes due 2022 ^(b)		(590	)		(590	)		(590	)		(581	)
5.00% senior notes due 2023 ^(b)		(741,531	)		(698,826	)		(741,531	)		(654,683	)
4.875% senior notes due 2025 ^(b)		(750,000	)		(658,020	)		(750,000	)		(616,313	)
5.75% senior subordinated notes due 2021 ^(b)		(22,214	)		(22,381	)		(22,214	)		(21,638	)
5.00% senior subordinated notes due 2022 ^(b)		(19,054	)		(18,379	)		(19,054	)		(17,072	)
5.00% senior subordinated notes due 2023 ^(b)		(7,712	)		(7,158	)		(7,712	)		(6,690	)
Deferred compensation plan ^(c)		(76,238	)		(76,238	)		(80,092	)		(80,092	)

^(a)	Marketable securities, which are held in our deferred compensation plans, are actively traded on major exchanges.

^(b)	The book value of our bank debt approximates fair value because of its floating rate structure. The fair value of our senior notes and our senior subordinated notes is based on end of period market quotes which are Level 2 inputs.

^(c)	The fair value of our deferred compensation plan is updated at the closing price on the balance sheet date which is a Level 1 input.

Our current assets and liabilities include financial instruments, the most significant of which are trade accounts receivable and payable. We believe the carrying values of our current assets and liabilities approximate fair value. Our fair value assessment incorporates a variety of considerations, including (1) the short-term duration of the instruments and (2) our historical and expected incurrence of bad debt expense. Non-financial liabilities initially measured at fair value include asset retirement obligations and operating lease liabilities. For additional information, see Note 11.

Concentrations of Credit Risk

As of June 30, 2019, our primary concentrations of credit risk are the risks of not collecting accounts receivable and the risk of a counterparty’s failure to perform under derivative obligations. Most of our receivables are from a diverse group of companies, including major energy companies, pipeline companies, local distribution companies, financial institutions and end-users in various industries. Letters of credit or other appropriate securities are obtained as deemed necessary to limit our risk of loss. Our allowance for uncollectable receivables was $6.1 million at both June 30, 2019 and December 31, 2018. Our derivative exposure to credit risk is diversified primarily among major investment grade financial institutions, where we have master netting agreements which provide for offsetting payables against receivables from separate derivative contracts. To manage counterparty risk associated with our derivatives, we select and monitor our counterparties based on our assessment of their financial strength and/or credit ratings. We may also limit the level of exposure with any single counterparty. At June 30, 2019, our derivative counterparties include nineteen financial institutions, of which all but three are secured lenders in our bank credit facility. At June 30, 2019, our net derivative liability includes a net payable of $2.2 million to these three counterparties that are not participants in our bank credit facility.

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Stock-based Compensation Plans

6 Months Ended

Jun. 30, 2019

Stock-based Compensation Plans

(14) STOCK-BASED COMPENSATION PLANS

Stock-Based Awards

We have two active equity-based stock plans, our Amended and Restated 2005 Equity-Based Incentive Compensation Plan, which we refer to as the 2005 Plan and the new 2019 Equity-Based Compensation Plan, which was approved by our stockholders in May, 2019. Under these plans, various awards may be issued to non-employee directors and employees pursuant to decisions of the Compensation Committee, which is composed of only non-employee, independent directors.

Total Stock-Based Compensation Expense

Stock-based compensation represents amortization of restricted stock and performance units. Unlike the other forms of stock-based compensation, the mark-to-market adjustment of the liability related to the vested restricted stock held in our deferred compensation plan is directly tied to the change in our stock price and not directly related to the functional expenses and therefore, is not allocated to the functional categories. The following details the allocation of stock-based compensation to functional expense categories (in thousands):

		Three Months Ended June 30,				Six Months Ended June 30,
		2019		2018		2019		2018
Direct operating expense	$	549	$	539	$	1,140	$	1,130
Brokered natural gas and marketing expense		553		313		1,001		598
Exploration expense		388		371		876		1,122
General and administrative expense		9,500		8,814		19,138		32,725
Termination costs		26		—		26		—
Total stock-based compensation	$	11,016	$	10,037	$	22,181	$	35,575

Stock-Based Awards

Restricted Stock Awards. We grant restricted stock units under our equity-based stock compensation plans. These restricted stock units, which we refer to as restricted stock Equity Awards, generally vest over a three-year period, contingent on the recipient’s continued employment. The grant date fair value of the Equity Awards is based on the fair market value of our common stock on the date of grant.

The Compensation Committee also grants restricted stock to certain employees and non-employee directors of the board of directors as part of their compensation. We also grant restricted stock to certain employees for retention purposes. Compensation expense is recognized over the balance of the vesting period, which is typically three years for employee grants and immediate vesting for non-employee directors. All restricted stock awards are issued at prevailing market prices at the time of the grant and the vesting is based upon an employee’s continued employment with us. Prior to vesting, all restricted stock awards have the right to vote such stock and receive dividends thereon. Upon grant of these restricted shares, which we refer to as restricted stock Liability Awards, the majority of these shares are generally placed in our deferred compensation plan and, upon vesting, withdrawals are allowed in either cash or in stock. These Liability Awards are classified as a liability and are remeasured at fair value each reporting period. This mark-to-market amount is reported in deferred compensation plan expense in the accompanying consolidated statements of operations. Historically, we have used authorized but unissued shares of stock when restricted stock is granted. However, we also utilize treasury shares when available.

Stock-Based Performance Units. We grant three types of performance share awards: two based on performance conditions measured against internal performance metrics (Production Growth Awards or “PG-PSUs” and Reserve Growth Awards or “RG-PSUs”) and one based on market conditions measured based on Range’s performance relative to a predetermined peer group (TSR Awards or “TSR-PSUs”).

Each unit granted represents one share of our common stock. These units are settled in stock and the amount of the payout is based on (1) the vesting percentage, which can be from zero to 200% based on performance achieved and (2) the value of our common stock on the vesting date which is determined by the Compensation Committee. Dividend equivalents may accrue during the performance period and are paid in stock at the end of the performance period. The performance period for the TSR-PSUs is three years. The performance period for the PG/RG-PSUs is based on annual performance targets earned over a three-year period.

SARs. At June 30, 2019, there were no SARs outstanding.

Restricted Stock – Equity Awards

In first six months 2019, we granted 2.8 million restricted stock Equity Awards to employees at an average price of $10.59 which generally vest over a three-year period compared to 1.8 million at an average price of $17.00 in first six months 2018. We recorded compensation expense for these awards of $13.6 million in first six months 2019 compared to $12.4 million in the same period of 2018. Restricted stock Equity Awards are not issued to employees until such time as they are vested and the employees do not have the option to receive cash.

Restricted Stock – Liability Awards

In first six months 2019, we granted 1.0 million shares of restricted stock Liability Awards as compensation to employees at an average price of $10.45 which vests generally over a three-year period and 157,000 shares were granted to non-employee directors at an average price of $9.50 with immediate vesting. In first six months 2018, we granted 675,000 shares of restricted stock Liability Awards as compensation to employees at an average price of $15.22 with vesting generally over a three-year period and 131,000 shares were granted to non-employee directors at an average price of $15.46 with immediate vesting. We recorded compensation expense for these Liability Awards of $4.6 million in first six months 2019 compared to $10.5 million in first six months 2018. The majority of these awards are held in our deferred compensation plan, are classified as a liability and are remeasured at fair value each reporting period. This mark-to-market amount is reported as deferred compensation expense in our consolidated statements of operations (see additional discussion below). The following is a summary of the status of our non-vested restricted stock outstanding at June 30, 2019:

	Restricted Stock Equity Awards					Restricted Stock Liability Awards
	Shares			Weighted Average Grant Date Fair Value		Shares			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2018		1,386,088		$	20.04		184,579		$	15.65
Granted		2,792,438			10.59		1,171,513			10.32
Vested		(869,674	)		15.77		(499,913	)		10.82
Forfeited		(275,991	)		13.39		—			—
Outstanding at June 30, 2019		3,032,861		$	13.17		856,179		$	11.17

Stock-Based Performance Units

Production Growth and Reserve Growth Awards. The PG-PSUs and RG-PSUs vest at the end of the three-year performance period. The performance metrics for each year are set by the Compensation Committee no later than March 31 of such year. If the performance metric for the applicable period is not met, that portion is considered forfeited and there is an adjustment to the expense recorded. The following is a summary of our non-vested PG/RG-PSUs awards outstanding at June 30, 2019:


	Number of Units			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2018	536,798		$	15.61
Units granted ^(a)	345,202			10.32
Forfeited	(427	)		15.65
Outstanding at June 30, 2019	881,573		$	11.70

^(a)	^{Amounts granted reflect the number of performance units granted; however, the actual payout of shares will be between zero and 200% depending on achievement of specifically identified performance targets.}

We recorded PG/RG-PSUs compensation expense of $1.7 million in first six months 2019 compared to $5.6 million in first six months 2018.

TSR Awards. TSR-PSUs granted are earned, or not earned, based on the comparative performance of Range’s common stock measured against a predetermined group of companies in the peer group over a three-year performance period. The fair value of the TSR-PSUs is estimated on the date of grant using a Monte Carlo simulation model which utilizes multiple input variables that determine the probability of satisfying the market condition stipulated in the award grant and calculates the fair value of the award. The fair value is recognized as stock-based compensation expense over the three-year performance period. Expected volatilities utilized in the model were estimated using a combination of a historical period consistent with the remaining performance period of three years and option implied volatilities. The risk-free interest rate was based on the United States Treasury rate for a term commensurate with the life of the grant. The following assumptions were used to estimate the fair value of PSUs granted during first six months 2019 and 2018:

	Six Months Ended June 30,
	2019			2018
Risk-free interest rate		2.4	%		2.4	%
Expected annual volatility		46	%		47	%
Grant date fair value per unit	$	11.34		$	18.51

The following is a summary of our non-vested TSR – PSUs award activities:

	Number of Units			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2018		1,067,886		$	27.81
Units granted ^(a)		314,152			11.34
Vested and issued ^(b)		(12,283	)		30.47
Forfeited		(376,303	)		37.25
Outstanding at June 30, 2019		993,452		$	19.00

^(a)	These amounts reflect the number of performance units granted. The actual payout of shares may be between zero and 200% of the performance units granted depending on the total shareholder return ranking compared to our peer companies at the vesting date.

^(b)	Includes 12,283 TSR-PSUs awards issued related to the 2016 performance period where the return on our common stock was in the 20^th percentile for the February 2016 grant. The remaining February 2016 awards are considered to be forfeited.

We recorded TSR-PSUs compensation expense of $1.3 million in first six months 2019 compared to $5.7 million in the same period of 2018. Fair value is amortized over the performance period with no adjustment to the expense recorded for actual targets achieved.

SARs

Information with respect to our SARs activity is summarized below.

	Shares		Weighted Average Exercise Price
Outstanding at December 31, 2018	1,104		$	81.74
Expired	(1,104	)		81.74
Outstanding at June 30, 2019	—		$	—

Other Post Retirement Benefits

Effective fourth quarter 2017, as part of our officer succession plan, we implemented a post retirement benefit plan to assist in providing health care to officers who are active employees (including their spouses) and have met certain age and service requirements. These benefits are not funded in advance and are provided up to age 65 or at the date they become eligible for Medicare, subject to various cost-sharing features. There was approximately $92,000 of estimated prior service costs amortized from accumulated other comprehensive income into general and administrative expense in both the three months ended June 30, 2019 and 2018 and approximately $185,000 amortized in both the six months ended June 30, 2019 and 2018. Those employees that qualified for the new post retirement health care plan were also fully vested in all equity grants. Effective October 2018, officers who qualified for the plan are required to provide reasonable notice of retirement and beginning in 2019 are fully vested after providing one year of service after the grant date.

Deferred Compensation Plan

Our deferred compensation plan gives non-employee directors and officers the ability to defer all or a portion of their salaries, bonuses or director fees and invest in Range common stock or make other investments at the individual’s discretion. Range provides a partial matching contribution to officers which vests over three years. The assets of the plan are held in a grantor trust, which we refer to as the Rabbi Trust, and are therefore available to satisfy the claims of our general creditors in the event of bankruptcy or insolvency. Our stock held in the Rabbi Trust is treated as a liability award as employees are allowed to take withdrawals from the Rabbi Trust either in cash or in Range stock. The liability for the vested portion of the stock held in the Rabbi Trust is reflected as deferred compensation liability in the accompanying consolidated balance sheets and is adjusted to fair value each reporting period by a charge or credit to deferred compensation plan expense on our consolidated statements of operations. The assets of the Rabbi Trust, other than our common stock, are invested in marketable securities and reported at their market value as other assets in the accompanying consolidated balance sheets. The deferred compensation liability reflects the vested market value of the marketable securities and Range stock held in the Rabbi Trust. Changes in the market value of the marketable securities and changes in the fair value of the deferred compensation plan liability are charged or credited to deferred compensation plan expense each quarter. We recorded mark-to-market gain of $11.1 million in second quarter 2019 compared to mark-to-market loss of $6.6 million in second quarter 2018. We recorded mark-to-market gain of $7.6 million in first six months 2019 compared to a mark-to-market gain of $782,000 in first six months 2018. The Rabbi Trust held 3.3 million shares (2.5 million of which were vested) of Range stock at June 30, 2019 compared to 2.6 million shares (2.4 million of which were vested) at December 31, 2018.

Termination Costs

6 Months Ended

Jun. 30, 2019

Restructuring And Related Activities [Abstract]

Termination Costs

(15) TERMINATION COSTS

In second quarter 2019, we announced a reduction in our work force. For the three months and the six months ended June 30, 2019, we recorded $2.2 million of severance costs and $26,000 of stock-based compensation related to this work force reduction.

The following details the accrued liability as of June 30, 2019:


	June 30, 2019
Beginning balance	$	—
Accrued severance costs		2,181
Payments		(97	)
Ending balance	$	2,084

Capital Stock

6 Months Ended

Jun. 30, 2019

Equity [Abstract]

Capital Stock

(16) CAPITAL STOCK

We have authorized capital stock of 485.0 million shares which includes 475.0 million shares of common stock and 10.0 million shares of preferred stock. We currently have no preferred stock issued or outstanding. The following is a schedule of changes in the number of common shares outstanding since the beginning of 2018:

	Six Months Ended June 30, 2019		Year Ended December 31, 2018
Beginning balance		249,510,022		248,129,430
Restricted stock grants		1,143,765		865,095
Restricted stock units vested		677,436		434,046
Performance stock units issued		12,283		73,985
Performance stock dividends		464		2,164
Treasury shares issued		—		5,302
Ending balance		251,343,970		249,510,022

Supplemental Cash Flow Information

6 Months Ended

Jun. 30, 2019

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

(17) SUPPLEMENTAL CASH FLOW INFORMATION

	Six Months Ended June 30,
	2019			2018
	(in thousands)
Net cash provided from operating activities included:
Income taxes refunded from taxing authorities	$	—		$	7,521
Interest paid		(99,675	)		(103,439	)
Non-cash investing and financing activities included:
Increase in asset retirement costs capitalized		2,326			19,561
Increase (decrease) in accrued capital expenditures		6,346			(102,809	)

Commitments and Contingencies

6 Months Ended

Jun. 30, 2019

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

(18) COMMITMENTS AND CONTINGENCIES

Litigation

We are the subject of, or party to, a number of pending or threatened legal actions, administrative proceedings and claims arising in the ordinary course of our business. While many of these matters involve inherent uncertainty, we believe that the amount of the liability, if any, ultimately incurred with respect to these actions, proceedings or claims will not have a material adverse effect on our consolidated financial position as a whole or on our liquidity, capital resources or future annual results of operations. We estimate and provide for potential losses that may arise out of litigation and regulatory proceedings to the extent that such losses are probable and can be reasonably estimated. We will continue to evaluate our litigation and regulatory proceedings quarterly and will establish and adjust any estimated liability as appropriate to reflect our assessment of the then current status of litigation and regulatory proceedings. Significant judgment is required in making these estimates and our final liabilities may ultimately be materially different.

Suspended Exploratory Well Costs

6 Months Ended

Jun. 30, 2019

Suspended Exploratory Well Costs

(19) SUSPENDED EXPLORATORY WELL COSTS

We capitalize exploratory well costs until a determination is made that the well has either found proved reserves or that it is impaired. Capitalized exploratory well costs are included in natural gas and oil properties in the accompanying consolidated balance sheets. If an exploratory well is determined to be impaired, the well costs are charged to exploration expense in the accompanying consolidated statements of operations. We do not have any suspended exploratory well costs as of June 30, 2019.

Costs Incurred for Property Acquisition, Exploration and Development

6 Months Ended

Jun. 30, 2019

Costs Incurred for Property Acquisition, Exploration and Development

(20) Costs Incurred for Property Acquisition, Exploration and Development ^(a)

	Six Months Ended June 30, 2019		Year Ended December 31, 2018
	(in thousands)
Acquisitions:
Acreage purchases	$	22,577	$	62,390
Oil and gas properties		—		1,683
Development		392,972		834,552
Exploration:
Drilling		—		1,380
Expense		15,444		32,196
Stock-based compensation expense		876		1,921
Gas gathering facilities:
Development		2,085		10,218
Subtotal		433,954		944,340
Asset retirement obligations		2,326		28,826
Total costs incurred	$	436,280	$	973,166

^(a)	Includes costs incurred whether capitalized or expensed.

Subsequent Events

6 Months Ended

Jun. 30, 2019

Subsequent Events [Abstract]

Subsequent Events

(21) SUBSEQUENT EVENTS

In mid July, we closed on two agreements to sell a proportionately reduced 2% overriding royalty in certain Pennsylvania leases for gross proceeds of $600.0 million. The properties encompass approximately 350,000 net surface acreage. We do not expect a gain or loss will be recorded on these two transactions.

Basis of Presentation (Policies)

6 Months Ended

Jun. 30, 2019

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Inventory

New Accounting Standards

Not Yet Adopted

Financial Instruments – Credit Losses

Fair Value Measurement

Recently Adopted

Lease Accounting Standard

•

not apply the recognition requirements to short-term leases (a lease that at commencement date has a lease term of 12 months or less and does not contain a purchase option);

•

not reassess whether a contract contains a lease, lease classification and initial direct costs; and

•

not reassess certain land easements in existence prior to January 1, 2019.


	January 1, 2019
		Adoption			Reclassification ⁽¹⁾			Total Adjustment
Balance Sheet:
Operating lease right-of-use assets	$	59,300		$	(7,925	)	$	51,375
Accrued liabilities – current	$	(14,811	)	$	—		$	(14,811	)
Operating lease liabilities – long-term	$	(44,489	)	$	—		$	(44,489	)
Asset retirement obligations and other liabilities	$	—		$	7,925		$	7,925

⁽¹⁾

Revenue Recognition Standard

Pension Accounting Standard

Modification of Share – Based Awards

New Accounting Standards (Tables)

6 Months Ended

Jun. 30, 2019

New Accounting Pronouncements And Changes In Accounting Principles [Abstract]

Schedule of Impact of Adoption of New Lease Accounting Standard

The impact of adoption of this new standards update was as follows (in thousands):


	January 1, 2019
		Adoption			Reclassification ⁽¹⁾			Total Adjustment
Balance Sheet:
Operating lease right-of-use assets	$	59,300		$	(7,925	)	$	51,375
Accrued liabilities – current	$	(14,811	)	$	—		$	(14,811	)
Operating lease liabilities – long-term	$	(44,489	)	$	—		$	(44,489	)
Asset retirement obligations and other liabilities	$	—		$	7,925		$	7,925

⁽¹⁾

Revenues from Contracts with Customers (Tables)

6 Months Ended

Jun. 30, 2019

Revenue From Contract With Customer [Abstract]

Disaggregation of Revenue by Identified Revenue Stream

Revenue attributable to each of our identified revenue streams is disaggregated below (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
		2019		2018		2019		2018
Natural gas sales	$	343,623	$	360,351	$	778,343	$	791,924
NGLs sales		167,027		224,703		364,840		427,230
Oil sales		52,929		76,336		92,050		138,865
Total natural gas, NGLs and oil sales		563,579		661,390		1,235,233		1,358,019
Sales of purchased natural gas		88,004		93,433		222,805		149,294
Sales of purchased NGLs		1,184		729		1,608		1,033
Other marketing revenue		3,417		3,922		6,406		7,736
Total	$	656,184	$	759,474	$	1,466,052	$	1,516,082

Income Taxes (Tables)

6 Months Ended

Jun. 30, 2019

Income Tax Disclosure [Abstract]

Income Tax Expense (Benefit)

		Three Months Ended June 30,					Six Months Ended June 30,
		2019			2018			2019			2018
Income tax expense (benefit)	$	40,099		$	(28,518)		$	45,787		$	14,158
Effective tax rate		25.8	%		26.3	%		28.2	%		(86.1	%)

Summary of Differences In Effective Tax Rate and Federal Statutory Rate Due to State Income Taxes, Equity Compensation and Other Tax Items

For three months and six months ended June 30, 2019 and 2018, our overall effective tax rate was different than the federal statutory rate due primarily to state income taxes (including adjustments to state income tax valuation allowances), equity compensation and other tax items which are detailed below (in thousands).

		Three Months Ended June 30,					Six Months Ended June 30,
		2019			2018			2019			2018
Total income (loss) before income taxes	$	155,284		$	(108,354	)	$	162,391		$	(16,440	)
U.S. federal statutory rate		21	%		21	%		21	%		21	%
Total tax expense (benefit) at statutory rate		32,610			(22,754	)		34,102			(3,452	)

State and local income taxes, net of federal benefit		5,725			(3,745	)		6,543			749
Equity compensation		497			1,476			3,888			2,140
Change in valuation allowances:
Federal net operating loss carryforwards		(916	)		—			(916	)		—
State net operating loss carryforwards and other		264			(2,042	)		616			13,636
Other		(532	)		18			(301	)		1,399
Permanent differences and other		2,451			(1,471	)		1,855			(314	)
Total expense (benefit) for income taxes	$	40,099		$	(28,518	)	$	45,787		$	14,158
Effective tax rate		25.8	%		26.3	%		28.2	%		(86.1	%)

Income (Loss) Per Common Share (Tables)

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Computations of Basic and Diluted Income (Loss) Per Common Share

		Three Months Ended June 30,						Six Months Ended June 30,
		2019			2018			2019			2018
Net income (loss), as reported	$	115,185		$	(79,836	)	$	116,604		$	(30,598	)
Participating earnings ^(a)		(1,592	)		(69	)		(1,400	)		(126	)
Basic net income (loss) attributed to common shareholders		113,593			(79,905	)		115,204			(30,724	)
Reallocation of participating earnings ^(a)		4			—			6			—
Diluted net income (loss) attributed to common shareholders	$	113,597		$	(79,905	)	$	115,210		$	(30,724	)
Net loss per common share:
Basic	$	0.46		$	(0.32	)	$	0.46		$	(0.13	)
Diluted	$	0.46		$	(0.32	)	$	0.46		$	(0.13	)

^(a)

Basic Weighted Average Common Shares Outstanding to Diluted Weighted Average Common Shares Outstanding

The following provides a reconciliation of basic weighted average common shares outstanding to diluted weighted average common shares outstanding (in thousands):

	Three Months Ended June 30,		Six Months Ended June 30,
	2019	2018		2019	2018
Weighted average common shares outstanding – basic	247,770	245,880		247,773	245,795
Effect of dilutive securities:
Director and employee restricted stock and performance based equity awards	666	—		1,269	—
Weighted average common shares outstanding – diluted	248,436	245,880		249,042	245,795

Leases (Tables)

6 Months Ended

Jun. 30, 2019

Leases [Abstract]

Schedule of Components of Lease Expense

The components of our total lease expense for the three and six months ended June 30, 2019, the majority of which is included in general and administrative expense, are as follows (in thousands):

	Three Months Ended June 30, 2019			Six Months Ended June 30, 2019

Operating lease cost	$	3,208		$	6,288
Variable lease expense ⁽¹⁾		1,203			2,354
Short-term lease expense ⁽²⁾		687			1,170
Sublease income		(873	)		(1,748	)
Total lease expense	$	4,225		$	8,064

Short-term lease costs ⁽³⁾	$	8,319		$	17,093

⁽¹⁾

^{Variable lease payments that are not dependent on an index or rate are not included in the lease liability or ROU assets.}

⁽²⁾

^{Short-term lease expense represents expense related to leases with a contract term of one year or less.}

⁽³⁾

Supplemental Cash Flow Information Related to Operating Leases

Supplemental cash flow information related to our operating leases is included in the table below (in thousands):

Six Months

Ended

June 30,

2019

Cash paid for amounts included in the measurement of lease liabilities

7,533

ROU assets added in exchange for lease obligations (since adoption)

2,096

Supplemental Balance Sheet Information Related to Operating Leases

Supplemental balance sheet information related to our operating leases is included in the table below (in thousands):

		June 30, 2019
Operating lease ROU assets	$	48,893
Accrued liabilities – current	$	(15,671	)
Operating lease liabilities – long-term	$	(39,897	)

Schedule of Weighted Average Remaining Lease Term and Weighted Average Discount Rate for Operating Leases

Our weighted average remaining lease term and weighted average discount rate for our operating leases are as follows:

June 30,

2019

Weighted average remaining lease term

6.2 years

Weighted average discount rate

6.2%

Schedule of Lease Liabilities with Enforceable Contract Terms are Greater Than One year Mature

Our lease liabilities with enforceable contract terms that are greater than one year mature as follows (in thousands):

		Operating Leases
Remainder of 2019	$	7,831
2020		14,397
2021		10,906
2022		6,991
2023		6,500
Thereafter		21,730
Total lease payments		68,355
Less effects of discounting		(12,787	)
Total lease liability	$	55,568

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization (Tables)

6 Months Ended

Jun. 30, 2019

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization

	June 30, 2019			December 31, 2018
	(in thousands)
Natural gas and oil properties:
Properties subject to depletion	$	10,962,361		$	10,974,929
Unproved properties		2,069,962			2,110,277
Total		13,032,323			13,085,206
Accumulated depreciation, depletion and amortization		(3,911,646	)		(4,062,021	)
Net capitalized costs	$	9,120,677		$	9,023,185

^(a)	^{Includes capitalized asset retirement costs and the associated accumulated amortization.}

Indebtedness (Tables)

6 Months Ended

Jun. 30, 2019

Debt Disclosure [Abstract]

Debt Outstanding


		June 30, 2019			December 31, 2018
Bank debt (3.9%)	$	895,000		$	943,000
Senior notes:
4.875% senior notes due 2025		750,000			750,000
5.00% senior notes due 2023		741,531			741,531
5.00% senior notes due 2022		580,032			580,032
5.75% senior notes due 2021		475,952			475,952
5.875% senior notes due 2022		329,244			329,244
Other senior notes due 2022		590			590
Total senior notes		2,877,349			2,877,349
Senior subordinated notes:
5.00% senior subordinated notes due 2023		7,712			7,712
5.00% senior subordinated notes due 2022		19,054			19,054
5.75% senior subordinated notes due 2021		22,214			22,214
Total senior subordinated notes		48,980			48,980
Total debt		3,821,329			3,869,329
Unamortized premium		4,070			4,741
Unamortized debt issuance costs		(32,944	)		(37,209	)
Total debt net of debt issuance costs	$	3,792,455		$	3,836,861

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligations (Tables)

6 Months Ended

Jun. 30, 2019

Asset Retirement Obligation

A reconciliation of our liability for plugging and abandonment costs for the six months ended June 30, 2019 and the year ended December 31, 2018 is as follows (in thousands):

	Six Months Ended June 30, 2019			Year Ended December 31, 2018
Beginning of period	$	312,754		$	276,855
Liabilities incurred		2,529			3,376
Acquisitions		—			13,438
Liabilities settled		(2,582	)		(5,052	)
Disposition of wells		—			(13,332	)
Accretion expense		8,487			25,456
Change in estimate		(203	)		12,013
End of period		320,985			312,754
Less current portion		(5,485	)		(5,485	)
Long-term asset retirement obligations	$	315,500		$	307,269

Derivative Activities (Tables)

6 Months Ended

Jun. 30, 2019

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Derivative Volumes Hedged and Average Hedge Prices

The following table sets forth our commodity-based derivative volumes by year as of June 30, 2019, excluding our basis and freight swaps which are discussed separately below:

Period	Contract Type	Volume Hedged	Weighted Average Hedge Price
Natural Gas
2019	Swaps	1,262,473 Mmbtu/day		$ 2.81
2020	Swaps	305,000 Mmbtu/day		$ 2.76
2019	Swaptions	150,000 Mmbtu/day		$ 2.81 ⁽¹⁾
2020	Swaptions	177,568 Mmbtu/day		$ 2.78 ⁽¹⁾
November – December 2019	Swaptions	20,000 Mmbtu/day		$ 3.20 ⁽¹⁾
January – March 2020	Swaptions	20,000 Mmbtu/day		$ 3.20 ⁽¹⁾

Crude Oil
2019	Swaps	8,750 bbls/day		$ 55.89
2020	Swaps	4,617 bbls/day		$ 60.48
2019	Collars	1,000 bbls/day		$ 63.00 − $ 73.00

NGLs (C5-Natural Gasoline)
2019	Swaps	4,500 bbls/day		$ 1.36/gallon

⁽¹⁾

Combined Fair Value of Derivatives, by Consolidated Balance Sheets

		June 30, 2019
		Gross Amounts of Recognized Assets		Gross Amounts Offset in the Balance Sheet			Net Amounts of Assets Presented in the Balance Sheet
Derivative assets:
Natural gas	–swaps	$	128,392	$	(2,132	)	$	126,260
	–swaptions		29,982		(6,070	)		23,912
	–basis swaps		1,220		(1,305	)		(85	)
Crude oil	–swaps		8,459		(4,932	)		3,527
	−collars		1,116		—			1,116
NGLs	–C3 propane spread swaps		6,815		(7,767	)		(952	)
	−C5 natural gasoline swaps		7,857		—			7,857
Freight	−swaps		1,501		—			1,501
		$	185,342	$	(22,206	)	$	163,136

		June 30, 2019
		Gross Amounts of Recognized (Liabilities)			Gross Amounts Offset in the Balance Sheet		Net Amounts of (Liabilities) Presented in the Balance Sheet
Derivative (liabilities):
Natural gas	–swaps	$	(2,132	)	$	2,132	$	—
	–swaptions		(6,070	)		6,070		—
	–basis swaps		(3,255	)		1,305		(1,950	)
Crude oil	–swaps		(4,932	)		4,932		—
NGLs	–C3 propane spread swaps		(8,592	)		7,767		(825	)
		$	(24,981	)	$	22,206	$	(2,775	)

		December 31, 2018
		Gross Amounts of Recognized Assets		Gross Amounts Offset in the Balance Sheet			Net Amounts of Assets Presented in the Balance Sheet
Derivative assets:
Natural gas	–swaps	$	20,834	$	(11,748	)	$	9,086
	–swaptions		5,200		(3,883	)		1,317
	–basis swaps		6,468		(2,822	)		3,646
Crude oil	–swaps		26,481		(651	)		25,830
	–collars		5,945		(707	)		5,238
NGLs	–C3 propane swaps		18,719		(589	)		18,130
	–C3 propane collars		8,538		—			8,538
	–C3 propane spread swaps		8,984		(8,868	)		116
	–NC4 butane swaps		4,084		—			4,084
	–C5 natural gasoline swaps		17,371		—			17,371
Freight	–swaps		—		(561	)		(561	)
		$	122,624	$	(29,829	)	$	92,795

		December 31, 2018
		Gross Amounts of Recognized (Liabilities)			Gross Amounts Offset in the Balance Sheet		Net Amounts of (Liabilities) Presented in the Balance Sheet
Derivative (liabilities):
Natural gas	–swaps	$	(18,332	)	$	11,748	$	(6,584	)
	–swaptions		(7,972	)		3,883		(4,089	)
	–basis swaps		(1,702	)		2,822		1,120
Crude oil	–swaps		—			651		651
	–collars		—			707		707
NGLs	–C3 propane swaps		—			589		589
	–C3 propane spread swaps		(8,868	)		8,868		—
Freight	–swaps		(561	)		561		—
		$	(37,435	)	$	29,829	$	(7,606	)

Effects of Derivatives on Consolidated Statements of Operations

The effects of our derivatives on our consolidated statements of operations are summarized below (in thousands):

	Derivative Fair Value Income (Loss)
		Three Months Ended June 30,					Six Months Ended June 30,
		2019		2018			2019			2018
Commodity swaps	$	159,128	$	(91,195	)	$	101,710		$	(107,730	)
Swaptions		32,383		(6,592	)		29,092			(2,993	)
Collars		578		11			(3,946	)		(66	)
Calls		—		152			—			329
Basis swaps		938		(5,828	)		4,353			(6,693	)
Freight swaps		2,218		162			2,305			(146	)
Total	$	195,245	$	(103,290	)	$	133,514		$	(117,299	)

Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109980867&loc=d3e41620-113959

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=109980867&loc=d3e41638-113959

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=109980867&loc=d3e41678-113959

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109980867&loc=d3e41641-113959

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(n)(2))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579240-113959

Fair Value Hierarchy Table for Assets and Liabilities Measured at Fair Value

Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2019

Fair Value Disclosures [Abstract]

	Fair Value Measurements at June 30, 2019 using:
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)		Total Carrying Value as of June 30, 2019
Trading securities held in the deferred compensation plans	$	60,697	$	—		$	—		$	60,697

Derivatives –swaps		—		137,644			—			137,644
–collars		—		1,116			—			1,116
–basis swaps		—		(3,812	)		—			(3,812	)
–freight swaps		—		1,501			—			1,501
–swaptions		—		—			23,912			23,912

	Fair Value Measurements at December 31, 2018 using:
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)			Total Carrying Value as of December 31, 2018
Trading securities held in the deferred compensation plans	$	57,293	$	—		$	—		$	57,293
Derivatives –swaps		—		69,156			—			69,156
–collars		—		5,945			8,538			14,483
–basis swaps		—		4,883			—			4,883
–freight swaps		—		(561	)		—			(561	)
–swaptions		—		—			(2,772	)		(2,772	)

Reconciliation of the Beginning and Ending Balances for Derivative Instruments Classified as Level 3 in the Fair Value Hierarchy

The following is a reconciliation of the beginning and ending balances for derivative instruments classified as Level 3 in the fair value hierarchy (in thousands):

	As of June 30, 2019
Balance at December 31, 2018	$	5,766
Total gains:
Included in earnings		28,338
Settlements, net		(10,192	)
Balance at June 30, 2019	$	23,912

Carrying Amounts and Fair Values of Financial Instruments

The following presents the carrying amounts and the fair values of our financial instruments as of June 30, 2019 and December 31, 2018 (in thousands):

	June 30, 2019						December 31, 2018
	Carrying Value			Fair Value			Carrying Value			Fair Value
Assets:
Commodity swaps, options and basis swaps	$	163,136		$	163,136		$	92,795		$	92,795
Marketable securities ^(a)		60,697			60,697			57,293			57,293
(Liabilities):
Commodity swaps, options and basis swaps		(2,775	)		(2,775	)		(7,606	)		(7,606	)
Bank credit facility ^(b)		(895,000	)		(895,000	)		(943,000	)		(943,000	)
5.75% senior notes due 2021 ^(b)		(475,952	)		(480,336	)		(475,952	)		(455,972	)
5.00% senior notes due 2022 ^(b)		(580,032	)		(553,948	)		(580,032	)		(519,343	)
5.875% senior notes due 2022 ^(b)		(329,244	)		(328,819	)		(329,244	)		(305,989	)
Other senior notes due 2022 ^(b)		(590	)		(590	)		(590	)		(581	)
5.00% senior notes due 2023 ^(b)		(741,531	)		(698,826	)		(741,531	)		(654,683	)
4.875% senior notes due 2025 ^(b)		(750,000	)		(658,020	)		(750,000	)		(616,313	)
5.75% senior subordinated notes due 2021 ^(b)		(22,214	)		(22,381	)		(22,214	)		(21,638	)
5.00% senior subordinated notes due 2022 ^(b)		(19,054	)		(18,379	)		(19,054	)		(17,072	)
5.00% senior subordinated notes due 2023 ^(b)		(7,712	)		(7,158	)		(7,712	)		(6,690	)
Deferred compensation plan ^(c)		(76,238	)		(76,238	)		(80,092	)		(80,092	)

^(a)	Marketable securities, which are held in our deferred compensation plans, are actively traded on major exchanges.

^(b)	The book value of our bank debt approximates fair value because of its floating rate structure. The fair value of our senior notes and our senior subordinated notes is based on end of period market quotes which are Level 2 inputs.

^(c)	The fair value of our deferred compensation plan is updated at the closing price on the balance sheet date which is a Level 1 input.

Stock-based Compensation Plans (Tables)

6 Months Ended

Jun. 30, 2019

Allocation of Stock-Based Compensation by Functional Category

The following details the allocation of stock-based compensation to functional expense categories (in thousands):

		Three Months Ended June 30,				Six Months Ended June 30,
		2019		2018		2019		2018
Direct operating expense	$	549	$	539	$	1,140	$	1,130
Brokered natural gas and marketing expense		553		313		1,001		598
Exploration expense		388		371		876		1,122
General and administrative expense		9,500		8,814		19,138		32,725
Termination costs		26		—		26		—
Total stock-based compensation	$	11,016	$	10,037	$	22,181	$	35,575

Restricted Stock and Restricted Stock Units Outstanding

The following is a summary of the status of our non-vested restricted stock outstanding at June 30, 2019:

	Restricted Stock Equity Awards					Restricted Stock Liability Awards
	Shares			Weighted Average Grant Date Fair Value		Shares			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2018		1,386,088		$	20.04		184,579		$	15.65
Granted		2,792,438			10.59		1,171,513			10.32
Vested		(869,674	)		15.77		(499,913	)		10.82
Forfeited		(275,991	)		13.39		—			—
Outstanding at June 30, 2019		3,032,861		$	13.17		856,179		$	11.17

Schedule of Share Based Payment Award Performance Stock Awards Valuation Assumptions

The following assumptions were used to estimate the fair value of PSUs granted during first six months 2019 and 2018:

	Six Months Ended June 30,
	2019			2018
Risk-free interest rate		2.4	%		2.4	%
Expected annual volatility		46	%		47	%
Grant date fair value per unit	$	11.34		$	18.51

Stock Option and SARs Activities

Information with respect to our SARs activity is summarized below.

	Shares		Weighted Average Exercise Price
Outstanding at December 31, 2018	1,104		$	81.74
Expired	(1,104	)		81.74
Outstanding at June 30, 2019	—		$	—

Performance-based PG-PSUs and RG-PSUs

Summary of Non-Vested Awards Activities

The following is a summary of our non-vested PG/RG-PSUs awards outstanding at June 30,


	Number of Units			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2018	536,798		$	15.61
Units granted ^(a)	345,202			10.32
Forfeited	(427	)		15.65
Outstanding at June 30, 2019	881,573		$	11.70

^(a)	^{Amounts granted reflect the number of performance units granted; however, the actual payout of shares will be between zero and 200% depending on achievement of specifically identified performance targets.}

Performance Based TSR - PSUs

Summary of Non-Vested Awards Activities

The following is a summary of our non-vested TSR – PSUs award activities:

	Number of Units			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2018		1,067,886		$	27.81
Units granted ^(a)		314,152			11.34
Vested and issued ^(b)		(12,283	)		30.47
Forfeited		(376,303	)		37.25
Outstanding at June 30, 2019		993,452		$	19.00

^(a)	These amounts reflect the number of performance units granted. The actual payout of shares may be between zero and 200% of the performance units granted depending on the total shareholder return ranking compared to our peer companies at the vesting date.

^(b)	Includes 12,283 TSR-PSUs awards issued related to the 2016 performance period where the return on our common stock was in the 20^th percentile for the February 2016 grant. The remaining February 2016 awards are considered to be forfeited.

Termination Costs (Tables)

6 Months Ended

Jun. 30, 2019

Restructuring And Related Activities [Abstract]

Termination Costs Included in Accrued Liabilities in Consolidated Balance Sheet

The following details the accrued liability as of June 30, 2019:


	June 30, 2019
Beginning balance	$	—
Accrued severance costs		2,181
Payments		(97	)
Ending balance	$	2,084

Capital Stock (Tables)

6 Months Ended

Jun. 30, 2019

Equity [Abstract]

Capital Stock

The following is a schedule of changes in the number of common shares outstanding since the beginning of 2018:

	Six Months Ended June 30, 2019		Year Ended December 31, 2018
Beginning balance		249,510,022		248,129,430
Restricted stock grants		1,143,765		865,095
Restricted stock units vested		677,436		434,046
Performance stock units issued		12,283		73,985
Performance stock dividends		464		2,164
Treasury shares issued		—		5,302
Ending balance		251,343,970		249,510,022

Supplemental Cash Flow Information (Tables)

6 Months Ended

Jun. 30, 2019

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

	Six Months Ended June 30,
	2019			2018
	(in thousands)
Net cash provided from operating activities included:
Income taxes refunded from taxing authorities	$	—		$	7,521
Interest paid		(99,675	)		(103,439	)
Non-cash investing and financing activities included:
Increase in asset retirement costs capitalized		2,326			19,561
Increase (decrease) in accrued capital expenditures		6,346			(102,809	)

Costs Incurred for Property Acquisition, Exploration and Development (Tables)

6 Months Ended

Jun. 30, 2019

Costs Incurred for Property Acquisition, Exploration and Development

	Six Months Ended June 30, 2019		Year Ended December 31, 2018
	(in thousands)
Acquisitions:
Acreage purchases	$	22,577	$	62,390
Oil and gas properties		—		1,683
Development		392,972		834,552
Exploration:
Drilling		—		1,380
Expense		15,444		32,196
Stock-based compensation expense		876		1,921
Gas gathering facilities:
Development		2,085		10,218
Subtotal		433,954		944,340
Asset retirement obligations		2,326		28,826
Total costs incurred	$	436,280	$	973,166

^(a)	Includes costs incurred whether capitalized or expensed.

Basis of Presentation - Inventory - Additional Information (Detail) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Inventory [Line Items]
Inventory and other	$ 26,706,000	$ 22,964,000
Materials and supplies inventory
Inventory [Line Items]
Inventory and other	8,900,000	8,000,000.0
Commodity inventory
Inventory [Line Items]
Inventory and other	$ 1,400,000	$ 965,000

New Accounting Standards - Additional Information (Detail)	Jan. 01, 2019
Accounting Standards Update 2016-02
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Impact of lease accounting standard recognition to total assets and total liabilities	1.00%

New Accounting Standards - Schedule of Impact of Adoption of New Lease Accounting Standard (Detail) - USD ($)
$ in Thousands

Jun. 30, 2019

Jan. 01, 2019

Dec. 31, 2018

New Accounting Pronouncements Or Change In Accounting Principle [Line Items]

$ 48,893

Operating lease liabilities – long-term

371,795

$ 475,848

39,897

Accounting Standards Update 2016-02

$ 323,668

$ 319,379

New Accounting Pronouncements Or Change In Accounting Principle [Line Items]

$ 51,375

Operating lease liabilities – long-term

(14,811)

(44,489)

Accounting Standards Update 2016-02 | Before Adoption

7,925

New Accounting Pronouncements Or Change In Accounting Principle [Line Items]

59,300

Operating lease liabilities – long-term

(14,811)

(44,489)

Accounting Standards Update 2016-02 | Reclassification

New Accounting Pronouncements Or Change In Accounting Principle [Line Items]

^[1]

(7,925)

Earnings Per Share Reconciliation [Abstract]

^[1]

$ 7,925

[1]

As of December 31, 2018, we had $7.9 million of operating lease liabilities recorded as part of purchase price accounting for building leases acquired because we did not expect to occupy the space or receive payments from our subleases. Lease incentives related to other buildings were also included. Upon adoption of the new standards update, these leases were included as part of our adoption. The ROU asset is reduced because we do not expect to use the asset.

New Accounting Standards - Schedule of Impact of Adoption of New Lease Accounting Standard (Parenthetical) (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Operating lease liabilities	$ 55,568
Accounting Standards Update 2016-02
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Operating lease liabilities		$ 7,900

Dispositions - Additional Information (Detail)	3 Months Ended				6 Months Ended
Dispositions - Additional Information (Detail)	Jun. 30, 2019 USD ($) a	Mar. 31, 2019 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
(Loss) gain on the sale of assets	$ 5,867,000		$ 156,000		$ 5,678,000	$ 179,000
Pennsylvania
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
(Loss) gain on the sale of assets	5,900,000
Proceeds from sale of oil and gas properties	$ 34,000,000.0
Pennsylvania \| Natural Gas and Oil Properties
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Number of acres sold \| a	20,000
Miscellaneous Proved, Unproved Properties and Surface Acreage
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
(Loss) gain on the sale of assets	$ 2,000	$ (189,000)	156,000	$ (23,000)
Proceeds from sale of oil and gas properties	$ 34,000	$ 332,000	$ 326,000	$ 40,000

Revenues from Contracts with Customers - Additional Information (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2019 USD ($) Stream	Dec. 31, 2018 USD ($)
Disaggregation of Revenue [Line Items]
Number of revenue streams \| Stream	3
Revenue Contract with Customer
Disaggregation of Revenue [Line Items]
Accounts receivable \| $	$ 241.0	$ 438.3

Revenues from Contracts with Customers - Disaggregation of Revenue by Identified Revenue Stream (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Total Revenue	$ 656,184	$ 759,474	$ 1,466,052	$ 1,516,082
Natural Gas, NGLs and Oil Sales
Disaggregation of Revenue [Line Items]
Total Revenue	563,579	661,390	1,235,233	1,358,019
Natural Gas, NGLs and Oil Sales \| Natural gas sales
Disaggregation of Revenue [Line Items]
Total Revenue	343,623	360,351	778,343	791,924
Natural Gas, NGLs and Oil Sales \| NGLs sales
Disaggregation of Revenue [Line Items]
Total Revenue	167,027	224,703	364,840	427,230
Natural Gas, NGLs and Oil Sales \| Oil sales
Disaggregation of Revenue [Line Items]
Total Revenue	52,929	76,336	92,050	138,865
Brokered Natural Gas, Marketing and Other
Disaggregation of Revenue [Line Items]
Total Revenue	92,605	98,084	230,819	158,063
Brokered Natural Gas, Marketing and Other \| Natural gas sales
Disaggregation of Revenue [Line Items]
Total Revenue	88,004	93,433	222,805	149,294
Brokered Natural Gas, Marketing and Other \| NGLs sales
Disaggregation of Revenue [Line Items]
Total Revenue	1,184	729	1,608	1,033
Brokered Natural Gas, Marketing and Other \| Other marketing revenue
Disaggregation of Revenue [Line Items]
Total Revenue	$ 3,417	$ 3,922	$ 6,406	$ 7,736

Income Taxes - Income Tax Expense (Benefit) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Components Of Income Tax Expense Benefit Continuing Operations [Abstract]
Income tax expense (benefit)	$ 40,099	$ (28,518)	$ 45,787	$ 14,158
Effective tax rate	25.80%	26.30%	28.20%	(86.10%)

Income Taxes - Summary of Differences In Effective Tax Rate and Federal Statutory Rate Due to State Income Taxes, Equity Compensation and Other Tax Items (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Total income (loss) before income taxes	$ 155,284	$ (108,354)	$ 162,391	$ (16,440)
U.S. federal statutory rate	21.00%	21.00%	21.00%	21.00%
Total tax expense (benefit) at statutory rate	$ 32,610	$ (22,754)	$ 34,102	$ (3,452)
State and local income taxes, net of federal benefit	5,725	(3,745)	6,543	749
Equity compensation	497	1,476	3,888	2,140
Change in valuation allowances:
Federal net operating loss carryforwards	(916)	0	(916)	0
State net operating loss carryforwards & other	264	(2,042)	616	13,636
Other	(532)	18	(301)	1,399
Permanent differences and other	2,451	(1,471)	1,855	(314)
Total (benefit) expense for income taxes	$ 40,099	$ (28,518)	$ 45,787	$ 14,158
Effective tax rate	25.80%	26.30%	28.20%	(86.10%)

Income (Loss) Per Common Share - Computations of Basic and Diluted Income (Loss) Per Common Share (Detail) - USD ($)
$ / shares in Units, $ in Thousands

3 Months Ended

6 Months Ended

Jun. 30, 2019

Mar. 31, 2019

Jun. 30, 2018

Mar. 31, 2018

Jun. 30, 2019

Jun. 30, 2018

Net income (loss)

$ 115,185

$ 1,419

$ (79,836)

$ 49,238

$ 116,604

$ (30,598)

Participating earnings

^[1]

(1,592)

(69)

(1,400)

(126)

Basic net income (loss) attributed to common shareholders

113,593

(79,905)

115,204

(30,724)

Reallocation of participating earnings

^[1]

Diluted net income (loss) attributed to common shareholders

$ 113,597

$ (79,905)

$ 115,210

$ (30,724)

Net loss per common share:

Basic

$ 0.46

$ (0.32)

$ 0.46

$ (0.13)

Diluted

$ 0.46

$ (0.32)

$ 0.46

$ (0.13)

[1]

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(19))
-URI http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=109260490&loc=d3e1337-109256

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 55
-Paragraph 52
-URI http://asc.fasb.org/extlink&oid=109256448&loc=d3e4984-109258

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(21))
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109260490&loc=d3e1252-109256

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(23))
-URI http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 60B
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109260490&loc=SL5780133-109256

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 55
-Paragraph 52
-URI http://asc.fasb.org/extlink&oid=109256448&loc=d3e4984-109258

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109260490&loc=d3e1252-109256

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(23))
-URI http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=109260490&loc=d3e1337-109256

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(21))
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 60B
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109260490&loc=SL5780133-109256

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(19))
-URI http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263

Lessee Lease Description [Line Items]

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Income (Loss) Per Common Share - Basic Weighted Average Common Shares Outstanding to Diluted Weighted Average Common Shares Outstanding (Detail) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Weighted Average Number Of Shares Outstanding [Abstract]
Weighted average common shares outstanding -basic	247,770	245,880	247,773	245,795
Effect of dilutive securities:
Director and employee restricted stock and performance based equity awards	666		1,269
Weighted average common shares outstanding – diluted	248,436	245,880	249,042	245,795

Income (Loss) Per Common Share - Additional Information (Detail) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Restricted Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Stock excluded from earning per share calculation	3.5	3.4	3.0	3.2
Equity Grants
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Stock excluded from earning per share calculation	1.7		1.6

Leases - Additional Information (Detail)	6 Months Ended
Leases - Additional Information (Detail)	Jun. 30, 2019
Lessee Lease Description [Line Items]
Lease, practical expedients, package [true false]	true
Office Space
Lessee Lease Description [Line Items]
Lessee, operating sublease, option to terminate	All of our subleases have terms that end in 2020 or 2022. The sublease agreements are non-cancelable through the end of the term and both parties have substantive rights to terminate the lease when the term is complete.
Field Equipment
Lessee Lease Description [Line Items]
Lessee, operating lease, option to extend, description	Our compressor and cooler arrangements are typically structured with a non-cancelable primary term of one to two years and continue thereafter on a month-to-month basis subject to termination by either party with thirty days notice.
Lessee operating lease notice period for renewal	30 days
Vehicle Fleet
Lessee Lease Description [Line Items]
Lessee operating lease notice period for renewal	3 years
Lessee operating lease contract of team description	Our vehicle agreements are non-cancelable for a minimum of one year and a maximum term of four to eight years depending on the type of vehicle. However, we have assumed a term of three years based on the period covered by options to terminate that we are reasonably certain to exercise.
Maximum
Lessee Lease Description [Line Items]
Short-term leases initial term	1 year
Lessee, operating lease, contract term	1 month
Maximum \| Office Space
Lessee Lease Description [Line Items]
Lessee, operating lease, contract term	15 years
Maximum \| Field Equipment
Lessee Lease Description [Line Items]
Lessee, operating lease, contract term	2 years
Maximum \| Vehicle Fleet
Lessee Lease Description [Line Items]
Lessee, operating lease, non-cancelable maximum contract term, depending on type of vehicle	8 years
Minimum \| Office Space
Lessee Lease Description [Line Items]
Lessee, operating lease, contract term	1 year
Minimum \| Field Equipment
Lessee Lease Description [Line Items]
Lessee, operating lease, contract term	1 year
Minimum \| Vehicle Fleet
Lessee Lease Description [Line Items]
Lessee, operating lease, contract term	1 year
Lessee, operating lease, non-cancelable maximum contract term, depending on type of vehicle	4 years

Leases - Schedule of Components of Lease Expense (Detail) - USD ($)
$ in Thousands

3 Months Ended

6 Months Ended

Jun. 30, 2019

Operating lease cost

$ 3,208

$ 6,288

Variable lease expense

^[1]

1,203

2,354

Short-term lease expense / costs

^[2]

687

1,170

Sublease income

(873)

(1,748)

Total lease expense

4,225

8,064

Natural Gas and Oil Properties

Lessee Lease Description [Line Items]

Short-term lease expense / costs

^[3]

$ 8,319

$ 17,093

[1]	Variable lease payments that are not dependent on an index or rate are not included in the lease liability or ROU assets.
[2]	Short-term lease expense represents expense related to leases with a contract term of one year or less.
[3]	These short-term lease costs are related to leases with a contract term of one year or less and the majority of which are related to drilling rigs and are capitalized as part of natural gas and oil properties on our balance sheets

Leases - Supplemental Cash Flow Information Related to Operating Leases (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2019 USD ($)
Leases [Abstract]
Cash paid for amounts included in the measurement of lease liabilities	$ 7,533
ROU assets added in exchange for lease obligations (since adoption)	$ 2,096

Leases - Supplemental Balance Sheet Information Related to Operating Leases (Detail) $ in Thousands	Jun. 30, 2019 USD ($)
Leases [Abstract]
Operating lease right-of-use assets	$ 48,893
Accrued liabilities – current	(15,671)
Operating lease liabilities – long-term	$ (39,897)

Leases - Schedule of Weighted Average Remaining Lease Term and Weighted Average Discount Rate for Operating Leases (Detail)	Jun. 30, 2019
Leases [Abstract]
Weighted average remaining lease term	6 years 2 months 12 days
Weighted average discount rate	6.20%

Leases - Schedule of Lease Liabilities with Enforceable Contract Terms are Greater Than One year Mature (Detail) $ in Thousands	Jun. 30, 2019 USD ($)
Leases [Abstract]
Remainder of 2019	$ 7,831
2020	14,397
2021	10,906
2022	6,991
2023	6,500
Thereafter	21,730
Total lease payments	68,355
Less effects of discounting	(12,787)
Operating lease liabilities	$ 55,568

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization (Detail) - USD ($)
$ in Thousands

Jun. 30, 2019

Dec. 31, 2018

Natural gas and oil properties:

Properties subject to depletion

^[1]

$ 10,962,361

$ 10,974,929

Unproved properties

^[1]

2,069,962

2,110,277

Total

^[1]

13,032,323

13,085,206

Accumulated depletion and depreciation

^[1]

(3,911,646)

(4,062,021)

Natural gas and oil properties, successful efforts method, net

^[1]

$ 9,120,677

$ 9,023,185

[1]	^{Includes capitalized asset retirement costs and the associated accumulated amortization.}

Indebtedness - Additional Information (Detail) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
Debt Disclosure [Abstract]
Interest capitalized during the period	$ 0	$ 0	$ 0

Indebtedness - Debt Outstanding (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Senior notes	$ 2,877,349	$ 2,877,349
Senior subordinated notes	48,980	48,980
Total debt	3,821,329	3,869,329
Unamortized premium	4,070	4,741
Unamortized debt issuance costs	(32,944)	(37,209)
Total debt net of debt issuance costs	3,792,455	3,836,861
3.9% Bank Debt \| Notes Payable to Banks
Debt Instrument [Line Items]
Bank debt (3.9%)	895,000	943,000
4.875% Senior Notes Due 2025
Debt Instrument [Line Items]
Senior notes	750,000	750,000
5.00% Senior Notes Due 2023
Debt Instrument [Line Items]
Senior notes	741,531	741,531
5.00% Senior Notes Due 2022
Debt Instrument [Line Items]
Senior notes	580,032	580,032
5.75% Senior Notes Due 2021
Debt Instrument [Line Items]
Senior notes	475,952	475,952
5.875% Senior Notes Due 2022
Debt Instrument [Line Items]
Senior notes	329,244	329,244
Other Senior Notes Due 2022
Debt Instrument [Line Items]
Senior notes	590	590
5.00% Senior Subordinated Notes Due 2023
Debt Instrument [Line Items]
Senior subordinated notes	7,712	7,712
5.00% Senior Subordinated Notes Due 2022
Debt Instrument [Line Items]
Senior subordinated notes	19,054	19,054
5.75% Senior Subordinated Notes Due 2021
Debt Instrument [Line Items]
Senior subordinated notes	$ 22,214	$ 22,214

Indebtedness - Debt Outstanding (Parenthetical) (Detail)	Jun. 30, 2019	Dec. 31, 2018
4.875% Senior Notes Due 2025
Debt Instrument [Line Items]
Interest rate on notes	4.875%	4.875%
5.00% Senior Notes Due 2023
Debt Instrument [Line Items]
Interest rate on notes	5.00%	5.00%
5.00% Senior Notes Due 2022
Debt Instrument [Line Items]
Interest rate on notes	5.00%	5.00%
5.75% Senior Notes Due 2021
Debt Instrument [Line Items]
Interest rate on notes	5.75%	5.75%
5.875% Senior Notes Due 2022
Debt Instrument [Line Items]
Interest rate on notes	5.875%	5.875%
5.00% Senior Subordinated Notes Due 2023
Debt Instrument [Line Items]
Interest rate on notes	5.00%	5.00%
5.00% Senior Subordinated Notes Due 2022
Debt Instrument [Line Items]
Interest rate on notes	5.00%	5.00%
5.75% Senior Subordinated Notes Due 2021
Debt Instrument [Line Items]
Interest rate on notes	5.75%	5.75%
Notes Payable to Banks \| 3.9% Bank Debt
Debt Instrument [Line Items]
Bank debt percentage	3.90%	3.90%

Indebtedness - Bank Debt - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($) CommercialBank	Jun. 30, 2018	Jun. 30, 2019 USD ($) CommercialBank	Jun. 30, 2018	Mar. 31, 2019	Dec. 31, 2018 USD ($)	Mar. 27, 2017 USD ($)
Debt Instrument [Line Items]
Bank debt	$ 885,286,000		$ 885,286,000			$ 932,018,000
Bank Credit Facility
Debt Instrument [Line Items]
Bank Credit facility, maximum amount	4,000,000,000.0		4,000,000,000.0
Bank Credit facility, borrowing base	$ 3,000,000,000.0		$ 3,000,000,000.0				$ 3,000,000,000.0
Percentage holding of commercial banks, Maximum	5.80%		5.80%
Number of commercial banks included in current bank group \| CommercialBank	27		27
Maturity date of loan			Apr. 13, 2023
Bank commitments	$ 2,000,000,000.0		$ 2,000,000,000.0				$ 2,000,000,000.0
Bank debt	895,000,000.0		895,000,000.0
Undrawn letters of credit	282,700,000		282,700,000
Borrowing capacity available under the commitment amount	$ 822,300,000		$ 822,300,000
Weighted average interest rate on the bank credit facility	4.00%	3.70%	4.00%	3.50%
Annual rate of commitment fee paid on the undrawn balance			0.30%
Bank Credit Facility \| Alternate Base Rate
Debt Instrument [Line Items]
Interest rate margin			0.50%
Bank Credit Facility \| LIBOR Rate
Debt Instrument [Line Items]
Interest rate margin			1.50%
Bank Credit Facility \| Minimum
Debt Instrument [Line Items]
Annual rate of commitment fee paid on the undrawn balance			0.30%
Bank Credit Facility \| Minimum \| Credit Facility
Debt Instrument [Line Items]
Annual rate of commitment fee paid on the undrawn balance			0.15%
Bank Credit Facility \| Minimum \| Alternate Base Rate
Debt Instrument [Line Items]
Base rate on debt	0.25%		0.25%
Bank Credit Facility \| Minimum \| Alternate Base Rate \| Credit Facility
Debt Instrument [Line Items]
Base rate on debt					0.125%
Bank Credit Facility \| Minimum \| LIBOR Rate
Debt Instrument [Line Items]
Base rate on debt	1.25%		1.25%
Bank Credit Facility \| Minimum \| LIBOR Rate \| Credit Facility
Debt Instrument [Line Items]
Base rate on debt					1.125%
Bank Credit Facility \| Maximum
Debt Instrument [Line Items]
Annual rate of commitment fee paid on the undrawn balance			0.375%
Bank Credit Facility \| Maximum \| Credit Facility
Debt Instrument [Line Items]
Annual rate of commitment fee paid on the undrawn balance			0.30%
Bank Credit Facility \| Maximum \| Alternate Base Rate
Debt Instrument [Line Items]
Base rate on debt	1.25%		1.25%
Bank Credit Facility \| Maximum \| Alternate Base Rate \| Credit Facility
Debt Instrument [Line Items]
Base rate on debt					0.75%
Bank Credit Facility \| Maximum \| LIBOR Rate
Debt Instrument [Line Items]
Base rate on debt	2.25%		2.25%
Bank Credit Facility \| Maximum \| LIBOR Rate \| Credit Facility
Debt Instrument [Line Items]
Base rate on debt					1.75%

Indebtedness - Senior Subordinated Notes - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2019
Subordinated Debt
Debt Instrument [Line Items]
Maximum redemption price of notes as percentage of principal amount	101.00%

Indebtedness - Guarantees and Debt Covenants - Additional Information (Detail) - Bank Credit Facility	6 Months Ended
	Jun. 30, 2019
Debt Instrument [Line Items]
Debt instrument, Covenant compliance	Our bank credit facility contains negative covenants that limit our ability, among other things, to pay cash dividends, incur additional indebtedness, sell assets, enter into certain hedging contracts, change the nature of our business or operations, merge, consolidate or make certain investments. In addition, we are required to maintain a ratio of EBITDAX (as defined in the bank credit facility agreement) to cash interest expense of equal to or greater than 2.5 and a current ratio (as defined in the bank credit facility agreement) of no less than 1.0. In addition, the ratio of the present value of proved reserves (as defined in the credit agreement) to total debt must be equal to or greater than 1.5 until Range has two investment grade ratings. We were in compliance with applicable covenants under the bank credit facility at June 30, 2019.
Minimum
Debt Instrument [Line Items]
Ratio of debt to EBITDAX	250.00%
Current ratio	100.00%
Present value of proved reserves to total debt	150.00%

Asset Retirement Obligations - Asset Retirement Obligations (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Asset Retirement Obligation [Abstract]
Beginning of period	$ 312,754	$ 276,855
Liabilities incurred	2,529	3,376
Acquisitions		13,438
Liabilities settled	(2,582)	(5,052)
Disposition of wells		(13,332)
Accretion expense	8,487	25,456
Change in estimate	(203)	12,013
End of period	320,985	312,754
Less current portion	(5,485)	(5,485)
Long-term asset retirement obligations	$ 315,500	$ 307,269

Derivative Activities - Additional Information (Detail) $ in Millions	Jun. 30, 2019 USD ($) t_per_M MMBTU bbl
Derivatives Excluding Basis Swaps and Freight Swaps
Derivative [Line Items]
Derivative assets liabilities at fair value net	$ 162.7
Commodity \| Natural Gas Basis Swaps
Derivative [Line Items]
Derivative assets liabilities at fair value net	$ (2.0)
Volume Hedged \| MMBTU	107,960,000
Commodity \| Propane Spread Swaps
Derivative [Line Items]
Derivative assets liabilities at fair value net	$ (1.8)
Volume Hedged \| bbl	1,875,000
Commodity \| Swaps \| Freight \| Level 2
Derivative [Line Items]
Derivative assets liabilities at fair value net	$ 1.5
Volume Hedged \| t_per_M	10,000

Derivative Activities - Derivative Volumes Hedged and Average Hedge Prices (Detail)

Jun. 30, 2019

MMBTU / d

bbl / d

$ / MMBTU

$ / bbl

$ / gal

2019 Commodity Contract | Swaps | Natural Gas

1,262,473

2019 Commodity Contract | Swaps | Crude Oil

2.81

Weighted Average Hedge Price | $ / bbl

8,750

55.89

2019 Commodity Contract | Swaps | NGLs (C5-Natural Gasoline)

Weighted Average Hedge Price | $ / gal

4,500

1.36

2019 Commodity Contract | Swaptions | Natural Gas

150,000

2019 Commodity Contract | Collars | Crude Oil

2.81

^[1]

2019 Commodity Contract | Collars | Crude Oil | Minimum

1,000

Weighted Average Hedge Price | $ / gal

63.00

2019 Commodity Contract | Collars | Crude Oil | Maximum

Weighted Average Hedge Price | $ / gal

73.00

2020 Commodity Contract | Swaps | Natural Gas

305,000

2020 Commodity Contract | Swaps | Crude Oil

2.76

Weighted Average Hedge Price | $ / bbl

4,617

60.48

2020 Commodity Contract | Swaptions | Natural Gas

177,568

November-December 2019 Commodity Contract | Swaptions | Natural Gas

2.78

^[1]

20,000

January-March 2020 Commodity Contract | Swaptions | Natural Gas

3.20

^[1]

20,000

3.20

^[1]

[1]

Derivative Activities - Derivative Volumes Hedged and Average Hedge Prices (Parenthetical) (Detail) - Swaps - Natural Gas	Jun. 30, 2019 MMBTU / d $ / MMBTU
November-December 2019 Commodity Contract \| Counterparty Can Elect to Double The Volume
Derivative [Line Items]
Volume Hedged \| MMBTU / d	20,000
Weighted average price of hedge \| $ / MMBTU	3.20
2019 Commodity Contract
Derivative [Line Items]
Volume Hedged \| MMBTU / d	1,262,473
Weighted average price of hedge \| $ / MMBTU	2.81
2019 Commodity Contract \| Counterparty Can Elect to Extend Contract
Derivative [Line Items]
Volume Hedged \| MMBTU / d	150,000
Weighted average price of hedge \| $ / MMBTU	2.81
2020 Commodity Contract
Derivative [Line Items]
Volume Hedged \| MMBTU / d	305,000
Weighted average price of hedge \| $ / MMBTU	2.76
2020 Commodity Contract \| Counterparty Can Elect to Double The Volume
Derivative [Line Items]
Volume Hedged \| MMBTU / d	140,000
Weighted average price of hedge \| $ / MMBTU	2.78
2020 Commodity Contract \| Counterparty Can Elect to Extend Contract
Derivative [Line Items]
Volume Hedged \| MMBTU / d	50,000
Weighted average price of hedge \| $ / MMBTU	2.75
January-March 2020 Commodity Contract \| Counterparty Can Elect to Double The Volume
Derivative [Line Items]
Volume Hedged \| MMBTU / d	20,000
Weighted average price of hedge \| $ / MMBTU	3.20

Derivative Activities - Schedule of Additional Information Related to Master Netting Arrangements with Derivative Counterparties (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Derivative [Line Items]
Gross Amounts of Recognized Assets	$ 185,342	$ 122,624
Gross Amounts Offset in the Balance Sheet	(22,206)	(29,829)
Net Amounts of Assets Presented in the Balance Sheet	163,136	92,795
Gross Amounts of Recognized (Liabilities)	(24,981)	(37,435)
Gross Amounts Offset in the Balance Sheet	22,206	29,829
Net Amounts of (Liabilities) Presented in the Balance Sheet	(2,775)	(7,606)
Commodity \| Swaps \| Natural Gas
Derivative [Line Items]
Gross Amounts of Recognized Assets	128,392	20,834
Gross Amounts Offset in the Balance Sheet	(2,132)	(11,748)
Net Amounts of Assets Presented in the Balance Sheet	126,260	9,086
Gross Amounts of Recognized (Liabilities)	(2,132)	(18,332)
Gross Amounts Offset in the Balance Sheet	2,132	11,748
Net Amounts of (Liabilities) Presented in the Balance Sheet	0	(6,584)
Commodity \| Swaps \| Crude Oil
Derivative [Line Items]
Gross Amounts of Recognized Assets	8,459	26,481
Gross Amounts Offset in the Balance Sheet	(4,932)	(651)
Net Amounts of Assets Presented in the Balance Sheet	3,527	25,830
Gross Amounts of Recognized (Liabilities)	(4,932)	0
Gross Amounts Offset in the Balance Sheet	4,932	651
Net Amounts of (Liabilities) Presented in the Balance Sheet	0	651
Commodity \| Swaps \| NGLs (C3-Propane)
Derivative [Line Items]
Gross Amounts of Recognized Assets		18,719
Gross Amounts Offset in the Balance Sheet		(589)
Net Amounts of Assets Presented in the Balance Sheet		18,130
Gross Amounts of Recognized (Liabilities)		0
Gross Amounts Offset in the Balance Sheet		589
Net Amounts of (Liabilities) Presented in the Balance Sheet		589
Commodity \| Swaps \| NGLs (C5-Natural Gasoline)
Derivative [Line Items]
Gross Amounts of Recognized Assets	7,857	17,371
Gross Amounts Offset in the Balance Sheet	0	0
Net Amounts of Assets Presented in the Balance Sheet	7,857	17,371
Commodity \| Swaps \| Freight
Derivative [Line Items]
Gross Amounts of Recognized Assets	1,501	0
Gross Amounts Offset in the Balance Sheet	0	(561)
Net Amounts of Assets Presented in the Balance Sheet	1,501	(561)
Gross Amounts of Recognized (Liabilities)		(561)
Gross Amounts Offset in the Balance Sheet		561
Net Amounts of (Liabilities) Presented in the Balance Sheet		0
Commodity \| Swaps \| NGLs (NC4-Normal Butane)
Derivative [Line Items]
Gross Amounts of Recognized Assets		4,084
Gross Amounts Offset in the Balance Sheet		0
Net Amounts of Assets Presented in the Balance Sheet		4,084
Commodity \| Swaptions \| Natural Gas
Derivative [Line Items]
Gross Amounts of Recognized Assets	29,982	5,200
Gross Amounts Offset in the Balance Sheet	(6,070)	(3,883)
Net Amounts of Assets Presented in the Balance Sheet	23,912	1,317
Gross Amounts of Recognized (Liabilities)	(6,070)	(7,972)
Gross Amounts Offset in the Balance Sheet	6,070	3,883
Net Amounts of (Liabilities) Presented in the Balance Sheet	0	(4,089)
Commodity \| Basis Swaps \| Natural Gas
Derivative [Line Items]
Gross Amounts of Recognized Assets	1,220	6,468
Gross Amounts Offset in the Balance Sheet	(1,305)	(2,822)
Net Amounts of Assets Presented in the Balance Sheet	(85)	3,646
Gross Amounts of Recognized (Liabilities)	(3,255)	(1,702)
Gross Amounts Offset in the Balance Sheet	1,305	2,822
Net Amounts of (Liabilities) Presented in the Balance Sheet	(1,950)	1,120
Commodity \| Collars \| Crude Oil
Derivative [Line Items]
Gross Amounts of Recognized Assets	1,116	5,945
Gross Amounts Offset in the Balance Sheet	0	(707)
Net Amounts of Assets Presented in the Balance Sheet	1,116	5,238
Gross Amounts of Recognized (Liabilities)		0
Gross Amounts Offset in the Balance Sheet		707
Net Amounts of (Liabilities) Presented in the Balance Sheet		707
Commodity \| Collars \| NGLs (C3-Propane)
Derivative [Line Items]
Gross Amounts of Recognized Assets		8,538
Gross Amounts Offset in the Balance Sheet		0
Net Amounts of Assets Presented in the Balance Sheet		8,538
Commodity \| Spread Swaps \| NGLs (C3-Propane)
Derivative [Line Items]
Gross Amounts of Recognized Assets	6,815	8,984
Gross Amounts Offset in the Balance Sheet	(7,767)	(8,868)
Net Amounts of Assets Presented in the Balance Sheet	(952)	116
Gross Amounts of Recognized (Liabilities)	(8,592)	(8,868)
Gross Amounts Offset in the Balance Sheet	7,767	8,868
Net Amounts of (Liabilities) Presented in the Balance Sheet	$ (825)	$ 0

Derivative Activities - Effects of Derivatives on Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Derivative [Line Items]
Derivative Fair Value Income (Loss)	$ 195,245	$ (103,290)	$ 133,514	$ (117,299)
Swaptions
Derivative [Line Items]
Derivative Fair Value Income (Loss)	32,383	(6,592)	29,092	(2,993)
Collars
Derivative [Line Items]
Derivative Fair Value Income (Loss)	578	11	(3,946)	(66)
Calls
Derivative [Line Items]
Derivative Fair Value Income (Loss)		152		329
Basis Swaps
Derivative [Line Items]
Derivative Fair Value Income (Loss)	938	(5,828)	4,353	(6,693)
Commodity \| Swaps
Derivative [Line Items]
Derivative Fair Value Income (Loss)	159,128	(91,195)	101,710	(107,730)
Freight \| Commodity \| Swaps
Derivative [Line Items]
Derivative Fair Value Income (Loss)	$ 2,218	$ 162	$ 2,305	$ (146)

Fair Value Measurements - Fair Value Hierarchy Table for Assets and Liabilities Measured at Fair Value (Detail) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Trading securities held in the deferred compensation plans	$ 60,697	$ 57,293
Fair Value, Inputs, Level 1
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Trading securities held in the deferred compensation plans	60,697	57,293
Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	137,644	69,156
Swaps \| Freight
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	1,501	(561)
Swaps \| Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	137,644	69,156
Swaps \| Level 2 \| Freight
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	1,501	(561)
Collars
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	1,116	14,483
Collars \| Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	1,116	5,945
Collars \| Fair Value, Inputs, Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net		8,538
Basis Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(3,812)	4,883
Basis Swaps \| Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(3,812)	4,883
Swaptions
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	23,912	(2,772)
Swaptions \| Fair Value, Inputs, Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	$ 23,912	$ (2,772)

Fair Value Measurements - Reconciliation of the Beginning and Ending Balances for Derivative Instruments Classified as Level 3 in the Fair Value Hierarchy (Detail) - Level 3 $ in Thousands	6 Months Ended
	Jun. 30, 2019 USD ($)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Balance at December 31, 2018	$ 5,766
Total gains included in earnings	28,338
Settlements, net	(10,192)
Balance at June 30, 2019	$ 23,912

Fair Value Measurements - Additional Information (Detail)	3 Months Ended				6 Months Ended
	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Jun. 30, 2019 USD ($) Counterparty	Jun. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Interest and dividends	$ 184,000		$ 213,000		$ 363,000	$ 381,000
Mark-to-market gain (loss)	1,500,000		324,000		6,600,000	(798,000)
Allowance for doubtful accounts on accounts receivable	6,121,000				$ 6,121,000		$ 6,118,000
Number of derivative counterparties \| Counterparty					19
Number of counter parties that are not participants in bank credit facility \| Counterparty					3
Counterparties not in Facility
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Net derivative liability	(2,200,000)				$ (2,200,000)
Natural Gas and Oil Properties \| Fair Value, Measurements, Nonrecurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment on natural gas and oil properties	$ 0	$ 0
Oklahoma
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment on natural gas and oil properties				$ 7,300,000
Oklahoma \| Natural Gas and Oil Properties \| Fair Value, Measurements, Nonrecurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value				$ 32,500,000
Northwest Pennsylvania
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment on natural gas and oil properties			15,300,000
Fair value			$ 0			$ 0

Fair Value Measurements - Carrying Amounts and Fair Values of Financial Instruments (Detail) - USD ($)
$ in Thousands

Jun. 30, 2019

Dec. 31, 2018

Carrying Value

Assets:

$ 163,136

$ 92,795

Marketable securities

^[1]

60,697

57,293

Deferred compensation plan

(2,775)

(7,606)

Bank credit facility

^[2]

(895,000)

(943,000)

^[3]

(76,238)

(80,092)

Fair Value

Assets:

163,136

92,795

Marketable securities

^[1]

60,697

57,293

Deferred compensation plan

(2,775)

(7,606)

Bank credit facility

^[2]

(895,000)

(943,000)

^[3]

(76,238)

(80,092)

5.75% Senior Notes Due 2021 | Carrying Value

5.75% Senior Notes Due 2021 | Fair Value

^[2]

(475,952)

5.00% Senior Notes Due 2022 | Carrying Value

^[2]

(480,336)

(455,972)

5.00% Senior Notes Due 2022 | Fair Value

^[2]

(580,032)

5.875% Senior Notes Due 2022 | Carrying Value

^[2]

(553,948)

(519,343)

5.875% Senior Notes Due 2022 | Fair Value

^[2]

(329,244)

Other Senior Notes Due 2022 | Carrying Value

^[2]

(328,819)

(305,989)

Other Senior Notes Due 2022 | Fair Value

^[2]

(590)

5.00% Senior Notes Due 2023 | Carrying Value

^[2]

(590)

(581)

5.00% Senior Notes Due 2023 | Fair Value

^[2]

(741,531)

4.875% Senior Notes Due 2025 | Carrying Value

^[2]

(698,826)

(654,683)

4.875% Senior Notes Due 2025 | Fair Value

^[2]

(750,000)

5.75% Senior Subordinated Notes Due 2021 | Carrying Value

^[2]

(658,020)

(616,313)

5.75% Senior Subordinated Notes Due 2021 | Fair Value

^[2]

(22,214)

5.00% Senior Subordinated Notes Due 2022 | Carrying Value

^[2]

(22,381)

(21,638)

5.00% Senior Subordinated Notes Due 2022 | Fair Value

^[2]

(19,054)

5.00% Senior Subordinated Notes Due 2023 | Carrying Value

^[2]

(18,379)

(17,072)

5.00% Senior Subordinated Notes Due 2023 | Fair Value

^[2]

(7,712)