View Filing Data

Asset retirement obligations

49,329

Other assets

74,757

68,166

Total assets

9,635,064

9,708,154

Current liabilities:

Accounts payable

215,073

227,344

5,485

Total current liabilities

399,822

475,848

Accrued interest

37,051

41,990

Derivative liabilities

13,369

4,144

670,800

754,811

Bank debt

884,652

932,018

Senior subordinated notes

2,857,297

2,856,166

48,700

48,677

Deferred tax liabilities

672,376

666,668

Derivative liabilities

2,559

3,462

Deferred compensation liabilities

75,179

67,542

Operating lease liabilities

41,759

Commitments and contingencies

319,079

319,379

Total liabilities

5,572,401

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, 251,147,799 issued at March 31, 2019 and 249,519,687 issued at December 31, 2018

2,512

2,495

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

(391)

Additional paid-in capital

5,635,210

5,628,447

Accumulated other comprehensive loss

(598)

(658)

Retained deficit

(1,574,070)

(1,570,462)

Total stockholders’ equity

4,062,663

4,059,431

Total liabilities and stockholders’ equity

$ 9,635,064

$ 9,708,154

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

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts on accounts receivable	$ 6,118	$ 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	251,147,799	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
	Mar. 31, 2019	Mar. 31, 2018
Revenues and other income:
Revenues and other income	$ 809,868,000	$ 756,608,000
Derivative fair value loss	(61,731,000)	(14,009,000)
Total revenues and other income	748,137,000	742,599,000
Costs and expenses:
Production and ad valorem taxes	11,310,000	9,926,000
Brokered natural gas and marketing	132,305,000	55,594,000
Exploration	8,211,000	7,719,000
Abandonment and impairment of unproved properties	12,659,000	11,773,000
General and administrative	46,638,000	68,417,000
Termination costs	0	(37,000)
Deferred compensation plan	3,581,000	(7,397,000)
Interest	51,537,000	52,385,000
Depletion, depreciation and amortization	138,718,000	162,266,000
Impairment of proved properties	0	7,312,000
Loss (gain) on the sale of assets	189,000	(23,000)
Total costs and expenses	741,030,000	650,685,000
Income before income taxes	7,107,000	91,914,000
Income tax expense:
Current	0	0
Deferred	5,688,000	42,676,000
Total (benefit) expense for income taxes	5,688,000	42,676,000
Net income	$ 1,419,000	$ 49,238,000
Net income per common share:
Basic	$ 0.01	$ 0.20
Diluted	0.01	0.20
Dividends paid per common share	$ 0.02	$ 0.02
Weighted average common shares outstanding:
Basic	247,776	245,709
Diluted	249,154	246,594
Natural Gas, NGLs and Oil Sales
Revenues and other income:
Revenues and other income	$ 671,654,000	$ 696,629,000
Brokered Natural Gas, Marketing and Other
Revenues and other income:
Revenues and other income	138,214,000	59,979,000
Direct Operating
Costs and expenses:
Costs and expenses	33,227,000	38,122,000
Transportation, Gathering, Processing and Compression
Costs and expenses:
Costs and expenses	$ 302,655,000	$ 244,628,000

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 1,419	$ 49,238
Postretirement benefits
Prior service cost	92	92
Actuarial gain	(12)
Income tax expense	(20)	(23)
Total comprehensive income	$ 1,479	$ 49,307

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 ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Operating activities:
Net income	$ 1,419,000	$ 49,238,000
Adjustments to reconcile net income to net cash provided from operating activities:
Deferred income tax expense	5,688,000	42,676,000
Depletion, depreciation and amortization and impairment	138,718,000	169,578,000
Exploration dry hole costs	0	2,000
Abandonment and impairment of unproved properties	12,659,000	11,773,000
Derivative fair value loss	61,731,000	14,009,000
Cash settlements on derivative financial instruments	24,834,000	8,925,000
Amortization of deferred financing costs and other	1,807,000	1,312,000
Deferred and stock-based compensation	14,112,000	18,527,000
Loss (gain) on the sale of assets	189,000	(23,000)
Changes in working capital:
Accounts receivable	134,006,000	53,913,000
Inventory and other	(4,763,000)	(5,294,000)
Accounts payable	(30,431,000)	47,453,000
Accrued liabilities and other	(99,275,000)	(41,517,000)
Net cash provided from operating activities	260,694,000	370,572,000
Investing activities:
Additions to natural gas and oil properties	(190,014,000)	(308,641,000)
Additions to field service assets	(576,000)	(239,000)
Acreage purchases	(23,646,000)	(25,355,000)
Proceeds from disposal of assets	332,000	40,000
Purchases of marketable securities held by the deferred compensation plan	(4,259,000)	(13,153,000)
Proceeds from the sales of marketable securities held by the deferred compensation plan	6,204,000	11,928,000
Net cash used in investing activities	(211,959,000)	(335,420,000)
Financing activities:
Borrowings on credit facilities	566,000,000	528,000,000
Repayments on credit facilities	(614,000,000)	(557,000,000)
Dividends paid	(5,023,000)	(4,971,000)
Taxes paid for shares withheld	(3,161,000)	(2,659,000)
Change in cash overdrafts	7,218,000	922,000
Proceeds from the sales of common stock held by the deferred compensation plan	174,000	635,000
Net cash used in financing activities	(48,792,000)	(35,073,000)
(Decrease) increase in cash and cash equivalents	(57,000)	79,000
Cash and cash equivalents at beginning of period	545,000	448,000
Cash and cash equivalents at end of period	$ 488,000	$ 527,000

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings	AOCI Attributable to Parent
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	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
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
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	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	251,147,799	251,148,000

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

Summary of Organization and Nature of Business

3 Months Ended

Mar. 31, 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

3 Months Ended

Mar. 31, 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 first quarter ended March 31, 2019 are not necessarily indicative of the results to be expected for the full year.

Inventory. As of March 31, 2019, we had $7.4 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 March 31, 2019, we also had commodity inventory of $253,000 compared to $965,000 at December 31, 2018. Commodity inventory as of March 31, 2019 consists of NGLs held in storage or as line fill in pipelines.

New Accounting Standards

3 Months Ended

Mar. 31, 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 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 is 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 primarily related to operating lease liabilities recorded as part of purchase price accounting related to building leases acquired because we did not expect to occupy the space or receive payments from our subleases. Lease incentives related to other buildings are also included. Upon adoption of the new standards update, these leases were included as part of our adoption but 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.

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.

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.

Dispositions

3 Months Ended

Mar. 31, 2019

Business Combinations [Abstract]

Dispositions

(4) DISPOSITIONS

We recognized a pretax net loss of $189,000 on the sale of assets in first quarter 2019 compared to a pretax net gain of $23,000 in the same period of the prior year.

2019 Dispositions

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

Revenues from Contracts with Customers

3 Months Ended

Mar. 31, 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 at the point in time that 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. Brokered revenue attributable to each product sales type is included here because the volume of product that we purchase is subsequently sold to separate counterparties in accordance with existing sales contracts under which we also sell our production. Our net brokered margin was a gain of $5.6 million in first quarter 2019 compared to a gain of $3.1 million in first quarter 2018. Currently, 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 $315.2 million at March 31, 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 March 31,
		2019		2018
Natural gas sales ^(a)	$	572,510	$	491,248
NGLs sales ^(b)		198,237		202,831
Oil sales		39,121		62,529
Total	$	809,868	$	756,608

^(a)	Natural gas sales revenue reported above for first quarter 2019 includes $134.8 million of brokered revenues and $3.0 million of marketing revenue. First quarter 2018 includes $55.9 million of brokered revenues and $3.8 million of marketing revenue.

^(b)	NGLs sales revenue reported above for the first quarter 2019 includes $424,000 of brokered revenues and first quarter 2018 includes $304,000 of brokered revenues.

Income Taxes

3 Months Ended

Mar. 31, 2019

Income Tax Disclosure [Abstract]

Income Taxes

(6) INCOME TAXES

Income tax expense was as follows (in thousands):

		Three Months Ended March 31,
		2019			2018
Income tax expense	$	5,688		$	42,676
Effective tax rate		80.0	%		46.4	%

We compute our quarterly taxes under the effective tax rate method based on applying an anticipated annual effective rate to our year-to-date income, except for discrete items. Income taxes for discrete items are computed and recorded in the period that the specific transaction occurs. For first quarter 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 March 31,
		2019			2018
Total income before income taxes	$	7,107		$	91,914
U.S. federal statutory rate		21	%		21	%
Total tax expense at statutory rate		1,492			19,302

State and local income taxes, net of federal benefit		818			4,494
Equity compensation		3,391			664
Change in valuation allowances:
State net operating loss carryforwards & other		352			15,678
Other		231			1,381
Permanent differences and other		(596	)		1,157
Total expense for income taxes	$	5,688		$	42,676
Effective tax rate		80.0	%		46.4	%

Income (Loss) Per Common Share

3 Months Ended

Mar. 31, 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 March 31,
		2019			2018
Net income, as reported	$	1,419		$	49,238
Participating earnings ^(a)		(14	)		(568	)
Basic net income attributed to common shareholders		1,405			48,670
Reallocation of participating earnings ^(a)		—			2
Diluted net income attributed to common shareholders	$	1,405		$	48,672
Net income per common share:
Basic	$	0.01		$	0.20
Diluted	$	0.01		$	0.20

^(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 March 31,
	2019	2018
Weighted average common shares outstanding – basic	247,776	245,709
Effect of dilutive securities:
Director and employee restricted stock and performance based equity awards	1,378	885
Weighted average common shares outstanding – diluted	249,154	246,594

Weighted average common shares outstanding-basic for first quarter 2019 excludes 2.5 million shares of restricted stock held in our deferred compensation plan compared to 2.9 million shares in first quarter 2018 (although all awards are issued and outstanding upon grant). For first quarter 2019, equity grants of 1.6 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 compared to equity grants of 1.5 million in first quarter 2018. For purposes of calculating diluted weighted average common shares, non-vested restricted stock and performance based equity awards are included in the computation using the treasury stock method with the deemed proceeds equal to the average unrecognized compensation during the period.

Leases

3 Months Ended

Mar. 31, 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 from our drilling operations 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 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 months ended March 31, 2019, the majority of which is included in general and administrative expense, are as follows (in thousands):

		Three Months Ended March 31, 2019
Operating lease cost	$	3,080
Variable lease expense ⁽¹⁾		1,151
Short-term lease expense ⁽²⁾		92
Sublease income		(875	)
Total lease expense	$	3,448

Short-term lease costs ⁽³⁾	$	9,164

⁽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):

Three Months Ended

March 31,

2019

Cash paid for amounts included in the measurement of lease liabilities

3,003

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

187

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

		March 31, 2019
Operating lease ROU assets	$	49,329
Accrued liabilities – current	$	(14,872	)
Operating lease liabilities – long-term	$	(41,759	)

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

March 31,

2019

Weighted Average Remaining Lease Term

6.4 Years

Weighted Average Discount Rate

6.1%

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

		Operating Leases
Remainder of 2019	$	14,872
2020		12,491
2021		9,618
2022		6,551
2023		6,479
Thereafter		20,113
Total lease payments	$	70,124
Less imputed interest		(13,493	)
Total lease liability	$	56,631

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization

3 Months Ended

Mar. 31, 2019

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization

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

	March 31, 2019			December 31, 2018
	(in thousands)
Natural gas and oil properties:
Properties subject to depletion	$	11,193,577		$	10,974,929
Unproved properties		2,106,568			2,110,277
Total		13,300,145			13,085,206
Accumulated depreciation, depletion and amortization		(4,194,876	)		(4,062,021	)
Net capitalized costs	$	9,105,269		$	9,023,185

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

Indebtedness

3 Months Ended

Mar. 31, 2019

Debt Disclosure [Abstract]

Indebtedness

(10) INDEBTEDNESS

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


		March 31, 2019			December 31, 2018
Bank debt (4.0%)	$	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		4,408			4,741
Unamortized debt issuance costs		(35,088	)		(37,209	)
Total debt net of debt issuance costs	$	3,790,649		$	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 March 31, 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 March 31, 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 $279.8 million of undrawn letters of credit leaving $825.2 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 first quarter 2019 compared to 3.4% for first quarter 2018. A commitment fee is paid on the undrawn balance based on an annual rate of 0.30% to 0.375%. At March 31, 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 are subordinated 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 March 31, 2019.

Asset Retirement Obligations

3 Months Ended

Mar. 31, 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 three months ended March 31, 2019 is as follows (in thousands):

	Three Months Ended March 31, 2019
Beginning of period	$	312,754
Liabilities incurred		1,719
Liabilities settled		(896	)
Accretion expense		4,217
Change in estimate		(187	)
End of period		317,607
Less current portion		(5,485	)
Long-term asset retirement obligations	$	312,122

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

Derivative Activities

3 Months Ended

Mar. 31, 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 $3.0 million at March 31, 2019. These contracts expire monthly through December 2020. The following table sets forth our commodity-based derivative volumes by year as of March 31, 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	1,246,873 Mmbtu/day		$ 2.80
2020	Swaps	190,000 Mmbtu/day		$ 2.75
2019	Swaptions	150,000 Mmbtu/day		$ 2.81 ⁽¹⁾
2020	Swaptions	140,000 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	7,472 bbls/day		$ 55.47
2020	Swaps	2,557 bbls/day		$ 60.53
2019	Collars	1,000 bbls/day		$ 63.00 − $ 73.02

NGLs (C2-Ethane)
April – June 2019	Swaps	500 bbls/day		$0.35/gallon

NGLs (C3-Propane)
April – June 2019	Swaps	8,500 bbls/day		$ 0.88/gallon
April – June 2019	Collars	1,000 bbls/day		$ 0.90 − $ 0.96

NGLs (C5-Natural Gasoline)
2019	Swaps	2,658 bbls/day		$ 1.39/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. In addition, for January through March 2020, we have additional swaps in place, 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 March 31, 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 69,775,000 Mmbtu. The fair value of these contracts was a loss of $3.4 million at March 31, 2019.

At March 31, 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 April through June and 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 $809,000 at March 31, 2019.

Freight Swap Contracts

In connection with our international propane sales, we utilize propane swaps. To further hedge our propane price, at March 31, 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 loss of $103,000 at March 31, 2019.

Derivative Assets and Liabilities

The combined fair value of derivatives included in the accompanying consolidated balance sheets as of March 31, 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):

		March 31, 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	$	15,883	$	(7,441	)	$	8,442
	–swaptions		6,487		(4,634	)		1,853
	–basis swaps		838		(838	)		—
Crude oil	–swaps		2,871		(4,648	)		(1,777	)
	−collars		1,252		(750	)		502
NGLs	−C2 ethane swaps		216		(216	)		—
	–C3 propane swaps		7,471		(3,108	)		4,363
	−C3 propane collars		967		(967	)		—
	–C3 propane spread swaps		3,425		(3,425	)		—
	−C5 natural gasoline swaps		4,643		(3,474	)		1,169
Freight	−swaps		37		(37	)		—
		$	44,090	$	(29,538	)	$	14,552

		March 31, 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	$	(13,030	)	$	7,441	$	(5,589	)
	–swaptions		(12,550	)		4,634		(7,916	)
	–basis swaps		(4,278	)		838		(3,440	)
Crude oil	–swaps		(11,197	)		4,648		(6,549	)
	−collars		—			750		750
NGLs	−C2 ethane swaps		—			216		216
	–C3 propane swaps		—			3,108		3,108
	–C3 propane collars		—			967		967
	–C3 propane spread swaps		(4,234	)		3,425		(809	)
	–C5 natural gasoline swaps		(37	)		3,474		3,437
Freight	–swaps		(140	)		37		(103	)
		$	(45,466	)	$	29,538	$	(15,928	)

		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 (Loss) Income
		Three Months Ended March 31,
		2019			2018
Commodity swaps	$	(57,418	)	$	(16,536	)
Swaptions		(3,291	)		3,599
Collars		(4,524	)		(77	)
Calls		—			177
Basis swaps		3,415			(864	)
Freight swaps		87			(308	)
Total	$	(61,731	)	$	(14,009	)

Fair Value Measurements

3 Months Ended

Mar. 31, 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 March 31, 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 March 31, 2019
Trading securities held in the deferred compensation plans	$	63,774	$	—		$	—			$	63,774

Derivatives –swaps		—		6,820			—				6,820
–collars		—		1,252			967				2,219
–basis swaps		—		(4,249	)		—				(4,249	)
–freight swaps		—		(103	)		—				(103	)
–swaptions		—		—			(6,063	)			(6,063	)

	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 March 31, 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 March 31, 2019
Balance at December 31, 2018	$	5,766
Total losses:
Included in earnings		(3,442	)
Settlements		(7,420	)
Balance at March 31, 2019	$	(5,096	)

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 first quarter 2019, interest and dividends were $179,000 and the mark-to-market adjustment was a gain of $5.1 million compared to interest and dividends of $168,000 and a mark-to-market loss of $7.5 million in first quarter 2018.

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 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. There were no impairment charges in first quarter 2019.

Fair Values – Reported

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

	March 31, 2019						December 31, 2018
	Carrying Value			Fair Value			Carrying Value			Fair Value
Assets:
Commodity swaps, options and basis swaps	$	14,552		$	14,552		$	92,795		$	92,795
Marketable securities ^(a)		63,774			63,774			57,293			57,293
(Liabilities):
Commodity swaps, options and basis swaps		(15,928	)		(15,928	)		(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	)		(486,042	)		(475,952	)		(455,972	)
5.00% senior notes due 2022 ^(b)		(580,032	)		(574,139	)		(580,032	)		(519,343	)
5.875% senior notes due 2022 ^(b)		(329,244	)		(333,020	)		(329,244	)		(305,989	)
Other senior notes due 2022 ^(b)		(590	)		(593	)		(590	)		(581	)
5.00% senior notes due 2023 ^(b)		(741,531	)		(718,996	)		(741,531	)		(654,683	)
4.875% senior notes due 2025 ^(b)		(750,000	)		(696,983	)		(750,000	)		(616,313	)
5.75% senior subordinated notes due 2021 ^(b)		(22,214	)		(22,539	)		(22,214	)		(21,638	)
5.00% senior subordinated notes due 2022 ^(b)		(19,054	)		(18,811	)		(19,054	)		(17,072	)
5.00% senior subordinated notes due 2023 ^(b)		(7,712	)		(7,085	)		(7,712	)		(6,690	)
Deferred compensation plan ^(c)		(88,334	)		(88,334	)		(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 March 31, 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 March 31, 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 March 31, 2019, our derivative counterparties include twenty financial institutions, of which all but four are secured lenders in our bank credit facility. At March 31, 2019, our net derivative liability includes a net payable of $3.9 million to these four 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

3 Months Ended

Mar. 31, 2019

Stock-based Compensation Plans

(14) STOCK-BASED COMPENSATION PLANS

Stock-Based Awards

We have one active equity-based stock plan, our Amended and Restated 2005 Equity-Based Incentive Compensation Plan, which we refer to as the 2005 Plan. Under this plan, 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 March 31,
		2019		2018
Direct operating expense	$	591	$	591
Brokered natural gas and marketing expense		385		285
Exploration expense		373		751
General and administrative expense		8,815		23,911
Total stock-based compensation	$	10,164	$	25,538

Stock-Based Awards

Restricted Stock Awards. We grant restricted stock units under our equity-based stock compensation plan. 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 March 31, 2019, there were no SARs outstanding.

Restricted Stock – Equity Awards

In first three 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 three months 2018. We recorded compensation expense for these awards of $7.1 million in first three months 2019 compared to $6.5 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 three months 2019, we granted 1.0 million shares of restricted stock Liability Awards as compensation to employees at an average price of $10.46 which vests generally over a three-year period. In first three months 2018, we granted 674,000 shares of restricted stock Liability Awards as compensation to employees at an average price of $15.21 with vesting generally over a three-year period. We recorded compensation expense for these Liability Awards of $1.0 million in first three months 2019 compared to $8.1 million in first three 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 March 31, 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		1,009,653			10.46
Vested		(447,405	)		16.10		(134,573	)		11.71
Forfeited		(103,093	)		13.56		—			—
Outstanding at March 31, 2019		3,628,028		$	13.44		1,059,659		$	11.21

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, then the portion is considered forfeited. The following is a summary of our non-vested PG/RG-PSUs awards outstanding at March 31, 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	—		—
Outstanding at March 31, 2019	882,000	$	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 $1.6 million in first three months 2019 compared to $5.3 million in first three 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 three months 2019 and 2018:

	Three Months Ended March 31,
	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		(79,058	)		30.47
Outstanding at March 31, 2019		1,290,697		$	23.62

^(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 $443,000 in first three months 2019 compared to $5.4 million in the same period of 2018.

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 March 31, 2019	—		$	—

Other Postretirement Benefits

Effective fourth quarter 2017, as part of our officer succession plan, we implemented a postretirement 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 were $92,000 of estimated prior service costs amortized from accumulated other comprehensive income into general and administrative expense in both the three months ended March 31, 2019 and 2018. Those employees that qualify for the new postretirement health care plan were also fully vested in all equity grants. Effective October 2018, officers who qualify 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 loss of $3.6 million in first quarter 2019 compared to mark-to-market gain of $7.4 million in first quarter 2018. The Rabbi Trust held 3.5 million shares (2.4 million of which were vested) of Range stock at March 31, 2019 compared to 2.6 million shares (2.4 million of which were vested) at December 31, 2018.

Capital Stock

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Capital Stock

(15) 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:

	Three Months Ended March 31, 2019		Year Ended December 31, 2018
Beginning balance		249,510,022		248,129,430
Restricted stock grants		981,905		865,095
Restricted stock units vested		633,460		434,046
Performance stock units issued		12,283		73,985
Performance stock dividends		464		2,164
Treasury shares issued		—		5,302
Ending balance		251,138,134		249,510,022

Supplemental Cash Flow Information

3 Months Ended

Mar. 31, 2019

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

(16) SUPPLEMENTAL CASH FLOW INFORMATION

	Three Months Ended March 31,
	2019			2018
	(in thousands)
Net cash provided from operating activities included:
Income taxes refunded from taxing authorities	$	—		$	7,518
Interest paid		(54,632	)		(57,536	)
Non-cash investing and financing activities included:
Increase in asset retirement costs capitalized		1,532			5,063
Increase (decrease) in accrued capital expenditures		22,764			(77,365	)

Commitments and Contingencies

3 Months Ended

Mar. 31, 2019

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

(17) 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

3 Months Ended

Mar. 31, 2019

Suspended Exploratory Well Costs

(18) 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 March 31, 2019 or December 31, 2018.

Costs Incurred for Property Acquisition, Exploration and Development

3 Months Ended

Mar. 31, 2019

Costs Incurred for Property Acquisition, Exploration and Development

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

	Three Months Ended March 31, 2019		Year Ended December 31, 2018
	(in thousands)
Acquisitions:
Acreage purchases	$	14,634	$	62,390
Oil and gas properties		—		1,683
Development		209,827		834,552
Exploration:
Drilling		542		1,380
Expense		7,837		32,196
Stock-based compensation expense		373		1,921
Gas gathering facilities:
Development		1,063		10,218
Subtotal		234,276		944,340
Asset retirement obligations		1,532		28,826
Total costs incurred	$	235,808	$	973,166

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

Basis of Presentation (Policies)

3 Months Ended

Mar. 31, 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⁾

Pension Accounting Standard

Modification of Share – Based Awards

Revenue Recognition Standard

New Accounting Standards (Tables)

3 Months Ended

Mar. 31, 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 is 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)

3 Months Ended

Mar. 31, 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 March 31,
		2019		2018
Natural gas sales ^(a)	$	572,510	$	491,248
NGLs sales ^(b)		198,237		202,831
Oil sales		39,121		62,529
Total	$	809,868	$	756,608

^(a)	Natural gas sales revenue reported above for first quarter 2019 includes $134.8 million of brokered revenues and $3.0 million of marketing revenue. First quarter 2018 includes $55.9 million of brokered revenues and $3.8 million of marketing revenue.

^(b)	NGLs sales revenue reported above for the first quarter 2019 includes $424,000 of brokered revenues and first quarter 2018 includes $304,000 of brokered revenues.

Income Taxes (Tables)

3 Months Ended

Mar. 31, 2019

Income Tax Disclosure [Abstract]

Income Tax Expense

Income tax expense was as follows (in thousands):

		Three Months Ended March 31,
		2019			2018
Income tax expense	$	5,688		$	42,676
Effective tax rate		80.0	%		46.4	%

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

For first quarter 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 March 31,
		2019			2018
Total income before income taxes	$	7,107		$	91,914
U.S. federal statutory rate		21	%		21	%
Total tax expense at statutory rate		1,492			19,302

State and local income taxes, net of federal benefit		818			4,494
Equity compensation		3,391			664
Change in valuation allowances:
State net operating loss carryforwards & other		352			15,678
Other		231			1,381
Permanent differences and other		(596	)		1,157
Total expense for income taxes	$	5,688		$	42,676
Effective tax rate		80.0	%		46.4	%

Income (Loss) Per Common Share (Tables)

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

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

		Three Months Ended March 31,
		2019			2018
Net income, as reported	$	1,419		$	49,238
Participating earnings ^(a)		(14	)		(568	)
Basic net income attributed to common shareholders		1,405			48,670
Reallocation of participating earnings ^(a)		—			2
Diluted net income attributed to common shareholders	$	1,405		$	48,672
Net income per common share:
Basic	$	0.01		$	0.20
Diluted	$	0.01		$	0.20

^(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 March 31,
	2019	2018
Weighted average common shares outstanding – basic	247,776	245,709
Effect of dilutive securities:
Director and employee restricted stock and performance based equity awards	1,378	885
Weighted average common shares outstanding – diluted	249,154	246,594

Leases (Tables)

3 Months Ended

Mar. 31, 2019

Leases [Abstract]

Schedule of Components of Lease Expense

The components of our total lease expense for the three months ended March 31, 2019, the majority of which is included in general and administrative expense, are as follows (in thousands):

		Three Months Ended March 31, 2019
Operating lease cost	$	3,080
Variable lease expense ⁽¹⁾		1,151
Short-term lease expense ⁽²⁾		92
Sublease income		(875	)
Total lease expense	$	3,448

Short-term lease costs ⁽³⁾	$	9,164

⁽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):

Three Months Ended

March 31,

2019

Cash paid for amounts included in the measurement of lease liabilities

3,003

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

187

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):

		March 31, 2019
Operating lease ROU assets	$	49,329
Accrued liabilities – current	$	(14,872	)
Operating lease liabilities – long-term	$	(41,759	)

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 (in thousands):

March 31,

2019

Weighted Average Remaining Lease Term

6.4 Years

Weighted Average Discount Rate

6.1%

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	$	14,872
2020		12,491
2021		9,618
2022		6,551
2023		6,479
Thereafter		20,113
Total lease payments	$	70,124
Less imputed interest		(13,493	)
Total lease liability	$	56,631

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

3 Months Ended

Mar. 31, 2019

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization

	March 31, 2019			December 31, 2018
	(in thousands)
Natural gas and oil properties:
Properties subject to depletion	$	11,193,577		$	10,974,929
Unproved properties		2,106,568			2,110,277
Total		13,300,145			13,085,206
Accumulated depreciation, depletion and amortization		(4,194,876	)		(4,062,021	)
Net capitalized costs	$	9,105,269		$	9,023,185

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

Indebtedness (Tables)

3 Months Ended

Mar. 31, 2019

Debt Disclosure [Abstract]

Debt Outstanding


		March 31, 2019			December 31, 2018
Bank debt (4.0%)	$	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		4,408			4,741
Unamortized debt issuance costs		(35,088	)		(37,209	)
Total debt net of debt issuance costs	$	3,790,649		$	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.

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Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligations (Tables)

3 Months Ended

Mar. 31, 2019

Asset Retirement Obligation

A reconciliation of our liability for plugging and abandonment costs for the three months ended March 31, 2019 is as follows (in thousands):

	Three Months Ended March 31, 2019
Beginning of period	$	312,754
Liabilities incurred		1,719
Liabilities settled		(896	)
Accretion expense		4,217
Change in estimate		(187	)
End of period		317,607
Less current portion		(5,485	)
Long-term asset retirement obligations	$	312,122

Derivative Activities (Tables)

3 Months Ended

Mar. 31, 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 March 31, 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	1,246,873 Mmbtu/day		$ 2.80
2020	Swaps	190,000 Mmbtu/day		$ 2.75
2019	Swaptions	150,000 Mmbtu/day		$ 2.81 ⁽¹⁾
2020	Swaptions	140,000 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	7,472 bbls/day		$ 55.47
2020	Swaps	2,557 bbls/day		$ 60.53
2019	Collars	1,000 bbls/day		$ 63.00 − $ 73.02

NGLs (C2-Ethane)
April – June 2019	Swaps	500 bbls/day		$0.35/gallon

NGLs (C3-Propane)
April – June 2019	Swaps	8,500 bbls/day		$ 0.88/gallon
April – June 2019	Collars	1,000 bbls/day		$ 0.90 − $ 0.96

NGLs (C5-Natural Gasoline)
2019	Swaps	2,658 bbls/day		$ 1.39/gallon

⁽¹⁾

Combined Fair Value of Derivatives, by Consolidated Balance Sheets

		March 31, 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	$	15,883	$	(7,441	)	$	8,442
	–swaptions		6,487		(4,634	)		1,853
	–basis swaps		838		(838	)		—
Crude oil	–swaps		2,871		(4,648	)		(1,777	)
	−collars		1,252		(750	)		502
NGLs	−C2 ethane swaps		216		(216	)		—
	–C3 propane swaps		7,471		(3,108	)		4,363
	−C3 propane collars		967		(967	)		—
	–C3 propane spread swaps		3,425		(3,425	)		—
	−C5 natural gasoline swaps		4,643		(3,474	)		1,169
Freight	−swaps		37		(37	)		—
		$	44,090	$	(29,538	)	$	14,552

		March 31, 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	$	(13,030	)	$	7,441	$	(5,589	)
	–swaptions		(12,550	)		4,634		(7,916	)
	–basis swaps		(4,278	)		838		(3,440	)
Crude oil	–swaps		(11,197	)		4,648		(6,549	)
	−collars		—			750		750
NGLs	−C2 ethane swaps		—			216		216
	–C3 propane swaps		—			3,108		3,108
	–C3 propane collars		—			967		967
	–C3 propane spread swaps		(4,234	)		3,425		(809	)
	–C5 natural gasoline swaps		(37	)		3,474		3,437
Freight	–swaps		(140	)		37		(103	)
		$	(45,466	)	$	29,538	$	(15,928	)

		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 (Loss) Income
		Three Months Ended March 31,
		2019			2018
Commodity swaps	$	(57,418	)	$	(16,536	)
Swaptions		(3,291	)		3,599
Collars		(4,524	)		(77	)
Calls		—			177
Basis swaps		3,415			(864	)
Freight swaps		87			(308	)
Total	$	(61,731	)	$	(14,009	)

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.

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

Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

	Fair Value Measurements at March 31, 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 March 31, 2019
Trading securities held in the deferred compensation plans	$	63,774	$	—		$	—			$	63,774

Derivatives –swaps		—		6,820			—				6,820
–collars		—		1,252			967				2,219
–basis swaps		—		(4,249	)		—				(4,249	)
–freight swaps		—		(103	)		—				(103	)
–swaptions		—		—			(6,063	)			(6,063	)

	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 March 31, 2019
Balance at December 31, 2018	$	5,766
Total losses:
Included in earnings		(3,442	)
Settlements		(7,420	)
Balance at March 31, 2019	$	(5,096	)

Carrying Amounts and Fair Values of Financial Instruments

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

	March 31, 2019						December 31, 2018
	Carrying Value			Fair Value			Carrying Value			Fair Value
Assets:
Commodity swaps, options and basis swaps	$	14,552		$	14,552		$	92,795		$	92,795
Marketable securities ^(a)		63,774			63,774			57,293			57,293
(Liabilities):
Commodity swaps, options and basis swaps		(15,928	)		(15,928	)		(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	)		(486,042	)		(475,952	)		(455,972	)
5.00% senior notes due 2022 ^(b)		(580,032	)		(574,139	)		(580,032	)		(519,343	)
5.875% senior notes due 2022 ^(b)		(329,244	)		(333,020	)		(329,244	)		(305,989	)
Other senior notes due 2022 ^(b)		(590	)		(593	)		(590	)		(581	)
5.00% senior notes due 2023 ^(b)		(741,531	)		(718,996	)		(741,531	)		(654,683	)
4.875% senior notes due 2025 ^(b)		(750,000	)		(696,983	)		(750,000	)		(616,313	)
5.75% senior subordinated notes due 2021 ^(b)		(22,214	)		(22,539	)		(22,214	)		(21,638	)
5.00% senior subordinated notes due 2022 ^(b)		(19,054	)		(18,811	)		(19,054	)		(17,072	)
5.00% senior subordinated notes due 2023 ^(b)		(7,712	)		(7,085	)		(7,712	)		(6,690	)
Deferred compensation plan ^(c)		(88,334	)		(88,334	)		(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)

3 Months Ended

Mar. 31, 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 March 31,
		2019		2018
Direct operating expense	$	591	$	591
Brokered natural gas and marketing expense		385		285
Exploration expense		373		751
General and administrative expense		8,815		23,911
Total stock-based compensation	$	10,164	$	25,538

Restricted Stock and Restricted Stock Units Outstanding

The following is a summary of the status of our non-vested restricted stock outstanding at March 31, 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		1,009,653			10.46
Vested		(447,405	)		16.10		(134,573	)		11.71
Forfeited		(103,093	)		13.56		—			—
Outstanding at March 31, 2019		3,628,028		$	13.44		1,059,659		$	11.21

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 three months 2019 and 2018:

	Three Months Ended March 31,
	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 March 31, 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 March


	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	—		—
Outstanding at March 31, 2019	882,000	$	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		(79,058	)		30.47
Outstanding at March 31, 2019		1,290,697		$	23.62

^(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.

Capital Stock (Tables)

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Capital Stock

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

	Three Months Ended March 31, 2019		Year Ended December 31, 2018
Beginning balance		249,510,022		248,129,430
Restricted stock grants		981,905		865,095
Restricted stock units vested		633,460		434,046
Performance stock units issued		12,283		73,985
Performance stock dividends		464		2,164
Treasury shares issued		—		5,302
Ending balance		251,138,134		249,510,022

Supplemental Cash Flow Information (Tables)

3 Months Ended

Mar. 31, 2019

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

	Three Months Ended March 31,
	2019			2018
	(in thousands)
Net cash provided from operating activities included:
Income taxes refunded from taxing authorities	$	—		$	7,518
Interest paid		(54,632	)		(57,536	)
Non-cash investing and financing activities included:
Increase in asset retirement costs capitalized		1,532			5,063
Increase (decrease) in accrued capital expenditures		22,764			(77,365	)

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

3 Months Ended

Mar. 31, 2019

Costs Incurred for Property Acquisition, Exploration and Development

	Three Months Ended March 31, 2019		Year Ended December 31, 2018
	(in thousands)
Acquisitions:
Acreage purchases	$	14,634	$	62,390
Oil and gas properties		—		1,683
Development		209,827		834,552
Exploration:
Drilling		542		1,380
Expense		7,837		32,196
Stock-based compensation expense		373		1,921
Gas gathering facilities:
Development		1,063		10,218
Subtotal		234,276		944,340
Asset retirement obligations		1,532		28,826
Total costs incurred	$	235,808	$	973,166

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

Basis of Presentation - Inventory - Additional Information (Detail) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Inventory [Line Items]
Inventory and other	$ 25,128,000	$ 22,964,000
Materials and supplies inventory
Inventory [Line Items]
Inventory and other	7,400,000	8,000,000.0
Commodity inventory
Inventory [Line Items]
Inventory and other	$ 253,000	$ 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

Mar. 31, 2019

Jan. 01, 2019

Dec. 31, 2018

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

$ 49,329

Operating lease liabilities – long-term

399,822

$ 475,848

41,759

Accounting Standards Update 2016-02

$ 319,079

$ 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)

^[1]

$ 7,925

[1]

As of December 31, 2018, we had $7.9 million primarily related to operating lease liabilities recorded as part of purchase price accounting related to building leases acquired because we did not expect to occupy the space or receive payments from our subleases. Lease incentives related to other buildings are also included. Upon adoption of the new standards update, these leases were included as part of our adoption but 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	Mar. 31, 2019	Dec. 31, 2018
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Operating lease liabilities	$ 56,631
Accounting Standards Update 2016-02
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Operating lease liabilities		$ 7,900

Dispositions - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
(Loss) gain on the sale of assets	$ (189,000)	$ 23,000
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	(189,000)	23,000
Proceeds from sale of oil and gas properties	$ 332,000	$ 40,000

Revenues from Contracts with Customers - Additional Information (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($) Stream	Mar. 31, 2018 USD ($)	Dec. 31, 2018 USD ($)
Disaggregation of Revenue [Line Items]
Number of revenue streams \| Stream	3
Net brokered margin gain	$ 5.6	$ 3.1
Revenue Contract with Customer
Disaggregation of Revenue [Line Items]
Accounts receivable	$ 315.2		$ 438.3

Revenues from Contracts with Customers - Disaggregation of Revenue by Identified Revenue Stream (Detail) - USD ($)
$ in Thousands

3 Months Ended

Mar. 31, 2019

Mar. 31, 2018

$ 809,868

$ 756,608

Natural gas sales

^[1]

572,510

491,248

NGLs sales

^[2]

198,237

202,831

Oil sales

$ 39,121

$ 62,529

[1]	Natural gas sales revenue reported above for first quarter 2019 includes $134.8 million of brokered revenues and $3.0 million of marketing revenue. First quarter 2018 includes $55.9 million of brokered revenues and $3.8 million of marketing revenue.
[2]	NGLs sales revenue reported above for the first quarter 2019 includes $424,000 of brokered revenues and first quarter 2018 includes $304,000 of brokered revenues.

Revenues from Contracts with Customers - Disaggregation of Revenue by Identified Revenue Stream (Parenthetical) (Detail) - USD ($)
$ in Thousands

3 Months Ended

Mar. 31, 2019

Mar. 31, 2018

$ 809,868

$ 756,608

Natural gas sales

^[1]

572,510

491,248

NGLs sales

Brokered | Natural gas sales

^[2]

198,237

202,831

134,800

55,900

Brokered | NGLs sales

Marketing | Natural gas sales

424,000

304,000

Earnings Per Share Reconciliation [Abstract]

$ 3,000

$ 3,800

[1]	Natural gas sales revenue reported above for first quarter 2019 includes $134.8 million of brokered revenues and $3.0 million of marketing revenue. First quarter 2018 includes $55.9 million of brokered revenues and $3.8 million of marketing revenue.
[2]	NGLs sales revenue reported above for the first quarter 2019 includes $424,000 of brokered revenues and first quarter 2018 includes $304,000 of brokered revenues.

Income Taxes - Income Tax Expense (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Components Of Income Tax Expense Benefit Continuing Operations [Abstract]
Income tax expense	$ 5,688	$ 42,676
Effective tax rate	80.00%	46.40%

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
	Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Total income before income taxes	$ 7,107	$ 91,914
U.S. federal statutory rate	21.00%	21.00%
Total tax expense at statutory rate	$ 1,492	$ 19,302
State and local income taxes, net of federal benefit	818	4,494
Equity compensation	3,391	664
Change in valuation allowances:
State net operating loss carryforwards & other	352	15,678
Other	231	1,381
Permanent differences and other	(596)	1,157
Total (benefit) expense for income taxes	$ 5,688	$ 42,676
Effective tax rate	80.00%	46.40%

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

Mar. 31, 2019

Mar. 31, 2018

Net income

$ 1,419

$ 49,238

Participating earnings

^[1]

(14)

(568)

Basic net income attributed to common shareholders

1,405

48,670

Reallocation of participating earnings

^[1]

Diluted net income attributed to common shareholders

$ 1,405

$ 48,672

Net income per common share:

Basic

$ 0.01

$ 0.20

Diluted

$ 0.01

$ 0.20

[1]

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

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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.

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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
	Mar. 31, 2019	Mar. 31, 2018
Weighted Average Number Of Shares Outstanding [Abstract]
Weighted average common shares outstanding -basic	247,776	245,709
Effect of dilutive securities:
Director and employee restricted stock and performance based equity awards	1,378	885
Weighted average common shares outstanding – diluted	249,154	246,594

Income (Loss) Per Common Share - Additional Information (Detail) - shares shares in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Restricted Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Stock excluded from earning per share calculation	2.5	2.9
Equity Grants
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Stock excluded from earning per share calculation	1.6	1.5

Leases - Additional Information (Detail)	3 Months Ended
Leases - Additional Information (Detail)	Mar. 31, 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)
$ in Thousands

3 Months Ended

Mar. 31, 2019

USD ($)

Operating lease cost

$ 3,080

Variable lease expense

1,151

^[1]

Short-term lease expense / costs

^[2]

Sublease income

(875)

Total lease expense

3,448

Natural Gas and Oil Properties

Lessee Lease Description [Line Items]

Short-term lease expense / costs

$ 9,164

^[3]

[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	3 Months Ended
	Mar. 31, 2019 USD ($)
Leases [Abstract]
Cash paid for amounts included in the measurement of lease liabilities	$ 3,003
ROU assets added in exchange for lease obligations (since adoption)	$ 187

Leases - Supplemental Balance Sheet Information Related to Operating Leases (Detail) $ in Thousands	Mar. 31, 2019 USD ($)
Leases [Abstract]
Operating lease right-of-use assets	$ 49,329
Accrued liabilities – current	(14,872)
Operating lease liabilities – long-term	$ (41,759)

Leases - Schedule of Weighted Average Remaining Lease Term and Weighted Average Discount Rate for Operating Leases (Detail)	Mar. 31, 2019
Leases [Abstract]
Weighted Average Remaining Lease Term	6 years 4 months 24 days
Weighted Average Discount Rate	6.10%

Leases - Schedule of Lease Liabilities with Enforceable Contract Terms are Greater Than One year Mature (Detail) $ in Thousands	Mar. 31, 2019 USD ($)
Leases [Abstract]
Remainder of 2019	$ 14,872
2020	12,491
2021	9,618
2022	6,551
2023	6,479
Thereafter	20,113
Total lease payments	70,124
Less imputed interest	(13,493)
Operating lease liabilities	$ 56,631

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

Mar. 31, 2019

Dec. 31, 2018

Natural gas and oil properties:

Properties subject to depletion

^[1]

$ 11,193,577

$ 10,974,929

Unproved properties

^[1]

2,106,568

2,110,277

Total

^[1]

13,300,145

13,085,206

Accumulated depletion and depreciation

^[1]

(4,194,876)

(4,062,021)

Natural gas and oil properties, successful efforts method, net

^[1]

$ 9,105,269

$ 9,023,185

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

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

Indebtedness - Debt Outstanding (Detail) - USD ($) $ in Thousands	Mar. 31, 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	4,408	4,741
Unamortized debt issuance costs	(35,088)	(37,209)
Total debt net of debt issuance costs	3,790,649	3,836,861
4.0% Bank Debt \| Notes Payable to Banks
Debt Instrument [Line Items]
Bank debt (4.0%)	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)	Mar. 31, 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 \| 4.0% Bank Debt
Debt Instrument [Line Items]
Bank debt percentage	4.00%	4.00%

Indebtedness - Bank Debt - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2019 USD ($) CommercialBank	Mar. 31, 2018	Dec. 31, 2018 USD ($)	Mar. 27, 2017 USD ($)
Debt Instrument [Line Items]
Bank debt	$ 884,652,000		$ 932,018,000
Bank Credit Facility
Debt Instrument [Line Items]
Bank Credit facility, maximum amount	4,000,000,000.0
Bank Credit facility, borrowing base	$ 3,000,000,000.0			$ 3,000,000,000.0
Percentage holding of commercial banks, Maximum	5.80%
Number of commercial banks included in current bank group \| CommercialBank	27
Maturity date of loan	Apr. 13, 2023
Bank commitments	$ 2,000,000,000.0			$ 2,000,000,000.0
Bank debt	895,000,000.0
Undrawn letters of credit	279,800,000
Borrowing capacity available under the commitment amount	$ 825,200,000
Weighted average interest rate on the bank credit facility	4.00%	3.40%
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%
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%
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%
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%
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)	3 Months Ended
	Mar. 31, 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	3 Months Ended
	Mar. 31, 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 March 31, 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	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Asset Retirement Obligation [Abstract]
Beginning of period	$ 312,754
Liabilities incurred	1,719
Liabilities settled	(896)
Accretion expense	4,217
Change in estimate	(187)
End of period	317,607
Less current portion	(5,485)	$ (5,485)
Long-term asset retirement obligations	$ 312,122

Derivative Activities - Additional Information (Detail)	Mar. 31, 2019 USD ($) t_per_M MMBTU bbl
Derivatives Excluding Basis Swaps and Freight Swaps
Derivative [Line Items]
Derivative assets liabilities at fair value net	$ 3,000,000
Commodity \| Natural Gas Basis Swaps
Derivative [Line Items]
Derivative assets liabilities at fair value net	$ (3,400,000)
Volume Hedged \| MMBTU	69,775,000
Commodity \| Propane Spread Swaps
Derivative [Line Items]
Derivative assets liabilities at fair value net	$ (809,000)
Volume Hedged \| bbl	1,875,000
Commodity \| Swaps \| Freight \| Level 2
Derivative [Line Items]
Derivative assets liabilities at fair value net	$ (103,000)
Volume Hedged \| t_per_M	10,000

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

Mar. 31, 2019

MMBTU / d

bbl / d

$ / MMBTU

$ / bbl

$ / gal

2019 Commodity Contract | Swaps | Natural Gas

1,246,873

2019 Commodity Contract | Swaps | Crude Oil

2.80

Weighted Average Hedge Price | $ / bbl

7,472

55.47

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

2,658

2019 Commodity Contract | Swaptions | Natural Gas

1.39

150,000

2019 Commodity Contract | Collars | Crude Oil

2.81

^[1]

2019 Commodity Contract | Collars | Crude Oil | Minimum

1,000

2019 Commodity Contract | Collars | Crude Oil | Maximum

63.00

2020 Commodity Contract | Swaps | Natural Gas

73.02

190,000

2020 Commodity Contract | Swaps | Crude Oil

2.75

Weighted Average Hedge Price | $ / bbl

2,557

60.53

2020 Commodity Contract | Swaptions | Natural Gas

140,000

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

April-June 2019 Commodity Contract | Swaps | NGLs (C2-Ethane)

3.20

^[1]

500

April-June 2019 Commodity Contract | Swaps | NGLs (C3-Propane)

0.35

8,500

April-June 2019 Commodity Contract | Collars | NGLs (C3-Propane)

0.88

April-June 2019 Commodity Contract | Collars | NGLs (C3-Propane) | Minimum

1,000

April-June 2019 Commodity Contract | Collars | NGLs (C3-Propane) | Maximum

0.90

0.96

[1]

Derivative Activities - Derivative Volumes Hedged and Average Hedge Prices (Parenthetical) (Detail) - Swaps - Natural Gas	Mar. 31, 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	1,246,873
Weighted average price of hedge \| $ / MMBTU	2.80
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	190,000
Weighted average price of hedge \| $ / MMBTU	2.75
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
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	Mar. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Gross Amounts of Recognized Assets	$ 44,090	$ 122,624
Gross Amounts Offset in the Balance Sheet	(29,538)	(29,829)
Net Amounts of Assets Presented in the Balance Sheet	14,552	92,795
Gross Amounts of Recognized (Liabilities)	(45,466)	(37,435)
Gross Amounts Offset in the Balance Sheet	29,538	29,829
Net Amounts of (Liabilities) Presented in the Balance Sheet	(15,928)	(7,606)
Commodity \| Swaps \| Natural Gas
Derivative [Line Items]
Gross Amounts of Recognized Assets	15,883	20,834
Gross Amounts Offset in the Balance Sheet	(7,441)	(11,748)
Net Amounts of Assets Presented in the Balance Sheet	8,442	9,086
Gross Amounts of Recognized (Liabilities)	(13,030)	(18,332)
Gross Amounts Offset in the Balance Sheet	7,441	11,748
Net Amounts of (Liabilities) Presented in the Balance Sheet	(5,589)	(6,584)
Commodity \| Swaps \| Crude Oil
Derivative [Line Items]
Gross Amounts of Recognized Assets	2,871	26,481
Gross Amounts Offset in the Balance Sheet	(4,648)	(651)
Net Amounts of Assets Presented in the Balance Sheet	(1,777)	25,830
Gross Amounts of Recognized (Liabilities)	(11,197)	0
Gross Amounts Offset in the Balance Sheet	4,648	651
Net Amounts of (Liabilities) Presented in the Balance Sheet	(6,549)	651
Commodity \| Swaps \| NGLs (C2-Ethane)
Derivative [Line Items]
Gross Amounts of Recognized Assets	216
Gross Amounts Offset in the Balance Sheet	(216)
Net Amounts of Assets Presented in the Balance Sheet	0
Gross Amounts of Recognized (Liabilities)	0
Gross Amounts Offset in the Balance Sheet	216
Net Amounts of (Liabilities) Presented in the Balance Sheet	216
Commodity \| Swaps \| NGLs (C3-Propane)
Derivative [Line Items]
Gross Amounts of Recognized Assets	7,471	18,719
Gross Amounts Offset in the Balance Sheet	(3,108)	(589)
Net Amounts of Assets Presented in the Balance Sheet	4,363	18,130
Gross Amounts of Recognized (Liabilities)	0	0
Gross Amounts Offset in the Balance Sheet	3,108	589
Net Amounts of (Liabilities) Presented in the Balance Sheet	3,108	589
Commodity \| Swaps \| NGLs (C5-Natural Gasoline)
Derivative [Line Items]
Gross Amounts of Recognized Assets	4,643	17,371
Gross Amounts Offset in the Balance Sheet	(3,474)	0
Net Amounts of Assets Presented in the Balance Sheet	1,169	17,371
Gross Amounts of Recognized (Liabilities)	(37)
Gross Amounts Offset in the Balance Sheet	3,474
Net Amounts of (Liabilities) Presented in the Balance Sheet	3,437
Commodity \| Swaps \| Freight
Derivative [Line Items]
Gross Amounts of Recognized Assets	37	0
Gross Amounts Offset in the Balance Sheet	(37)	(561)
Net Amounts of Assets Presented in the Balance Sheet	0	(561)
Gross Amounts of Recognized (Liabilities)	(140)	(561)
Gross Amounts Offset in the Balance Sheet	37	561
Net Amounts of (Liabilities) Presented in the Balance Sheet	(103)	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	6,487	5,200
Gross Amounts Offset in the Balance Sheet	(4,634)	(3,883)
Net Amounts of Assets Presented in the Balance Sheet	1,853	1,317
Gross Amounts of Recognized (Liabilities)	(12,550)	(7,972)
Gross Amounts Offset in the Balance Sheet	4,634	3,883
Net Amounts of (Liabilities) Presented in the Balance Sheet	(7,916)	(4,089)
Commodity \| Basis Swaps \| Natural Gas
Derivative [Line Items]
Gross Amounts of Recognized Assets	838	6,468
Gross Amounts Offset in the Balance Sheet	(838)	(2,822)
Net Amounts of Assets Presented in the Balance Sheet	0	3,646
Gross Amounts of Recognized (Liabilities)	(4,278)	(1,702)
Gross Amounts Offset in the Balance Sheet	838	2,822
Net Amounts of (Liabilities) Presented in the Balance Sheet	(3,440)	1,120
Commodity \| Collars \| Crude Oil
Derivative [Line Items]
Gross Amounts of Recognized Assets	1,252	5,945
Gross Amounts Offset in the Balance Sheet	(750)	(707)
Net Amounts of Assets Presented in the Balance Sheet	502	5,238
Gross Amounts of Recognized (Liabilities)	0	0
Gross Amounts Offset in the Balance Sheet	750	707
Net Amounts of (Liabilities) Presented in the Balance Sheet	750	707
Commodity \| Collars \| NGLs (C3-Propane)
Derivative [Line Items]
Gross Amounts of Recognized Assets	967	8,538
Gross Amounts Offset in the Balance Sheet	(967)	0
Net Amounts of Assets Presented in the Balance Sheet	0	8,538
Gross Amounts of Recognized (Liabilities)	0
Gross Amounts Offset in the Balance Sheet	967
Net Amounts of (Liabilities) Presented in the Balance Sheet	967
Commodity \| Spread Swaps \| NGLs (C3-Propane)
Derivative [Line Items]
Gross Amounts of Recognized Assets	3,425	8,984
Gross Amounts Offset in the Balance Sheet	(3,425)	(8,868)
Net Amounts of Assets Presented in the Balance Sheet	0	116
Gross Amounts of Recognized (Liabilities)	(4,234)	(8,868)
Gross Amounts Offset in the Balance Sheet	3,425	8,868
Net Amounts of (Liabilities) Presented in the Balance Sheet	$ (809)	$ 0

Derivative Activities - Effects of Derivatives on Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Derivative [Line Items]
Derivative Fair Value (Loss) Income	$ (61,731)	$ (14,009)
Swaptions
Derivative [Line Items]
Derivative Fair Value (Loss) Income	(3,291)	3,599
Collars
Derivative [Line Items]
Derivative Fair Value (Loss) Income	(4,524)	(77)
Calls
Derivative [Line Items]
Derivative Fair Value (Loss) Income	0	177
Basis Swaps
Derivative [Line Items]
Derivative Fair Value (Loss) Income	3,415	(864)
Commodity \| Swaps
Derivative [Line Items]
Derivative Fair Value (Loss) Income	(57,418)	(16,536)
Freight \| Commodity \| Swaps
Derivative [Line Items]
Derivative Fair Value (Loss) Income	$ 87	$ (308)

Fair Value Measurements - Fair Value Hierarchy Table for Assets and Liabilities Measured at Fair Value (Detail) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Mar. 31, 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	$ 63,774	$ 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	63,774	57,293
Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	6,820	69,156
Swaps \| Freight
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(103)	(561)
Swaps \| Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	6,820	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	(103)	(561)
Collars
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	2,219	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	1,252	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	967	8,538
Basis Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(4,249)	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	(4,249)	4,883
Swaptions
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(6,063)	(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	$ (6,063)	$ (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	3 Months Ended
	Mar. 31, 2019 USD ($)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Balance at December 31, 2018	$ 5,766
Total losses included in earnings	(3,442)
Settlements	(7,420)
Balance at March 31, 2019	$ (5,096)

Fair Value Measurements - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2019 USD ($) Counterparty	Mar. 31, 2018 USD ($)	Dec. 31, 2018 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Interest and dividends	$ 179,000	$ 168,000
Mark-to-market gain (loss)	5,100,000	(7,500,000)
Allowance for doubtful accounts on accounts receivable	$ 6,118,000		$ 6,118,000
Number of derivative counterparties \| Counterparty	20
Number of counter parties that are not participants in bank credit facility \| Counterparty	4
Counterparties not in Facility
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Net derivative liability	$ (3,900,000)
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
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

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

Mar. 31, 2019

Dec. 31, 2018

Carrying Value

Assets:

$ 14,552

$ 92,795

Marketable securities

^[1]

63,774

57,293

Deferred compensation plan

(15,928)

(7,606)

Bank credit facility

^[2]

(895,000)

(943,000)

^[3]

(88,334)

(80,092)

Fair Value

Assets:

14,552

92,795

Marketable securities

^[1]

63,774

57,293

Deferred compensation plan

(15,928)

(7,606)

Bank credit facility

^[2]

(895,000)

(943,000)

^[3]

(88,334)

(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]

(486,042)

(455,972)

5.00% Senior Notes Due 2022 | Fair Value

^[2]

(580,032)

5.875% Senior Notes Due 2022 | Carrying Value

^[2]

(574,139)

(519,343)

5.875% Senior Notes Due 2022 | Fair Value

^[2]

(329,244)

Other Senior Notes Due 2022 | Carrying Value

^[2]

(333,020)

(305,989)

Other Senior Notes Due 2022 | Fair Value

^[2]

(590)

5.00% Senior Notes Due 2023 | Carrying Value

^[2]

(593)

(581)

5.00% Senior Notes Due 2023 | Fair Value

^[2]

(741,531)

4.875% Senior Notes Due 2025 | Carrying Value

^[2]

(718,996)

(654,683)

4.875% Senior Notes Due 2025 | Fair Value

^[2]

(750,000)

5.75% Senior Subordinated Notes Due 2021 | Carrying Value

^[2]

(696,983)

(616,313)

5.75% Senior Subordinated Notes Due 2021 | Fair Value

^[2]

(22,214)

5.00% Senior Subordinated Notes Due 2022 | Carrying Value

^[2]

(22,539)

(21,638)

5.00% Senior Subordinated Notes Due 2022 | Fair Value

^[2]

(19,054)

5.00% Senior Subordinated Notes Due 2023 | Carrying Value

^[2]

(18,811)

(17,072)

5.00% Senior Subordinated Notes Due 2023 | Fair Value

^[2]

(7,712)