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Cover
Document and Entity Information
Financial Statements
CONSOLIDATED BALANCE SHEETS
CONSOLIDATED BALANCE SHEETS (Parenthetical)
CONSOLIDATED STATEMENTS OF INCOME
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
CONSOLIDATED STATEMENTS OF CASH FLOWS
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical)
Notes to Financial Statements
Pay vs Performance Disclosure
Insider Trading Arrangements
Summary of Organization and Nature of Business
Summary of Significant Accounting Policies
Revenues from Contracts with Customers
Income Taxes
Net Income Per Common Share
Indebtedness
Asset Retirement Obligations
Derivative Activities
Fair Value Measurements
Stock-Based Compensation Plans
Capital Stock
Supplemental Cash Flow Information
Commitments and Contingencies
Exit Costs
Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited)
Accounting Policies
Summary of Significant Accounting Policies (Policies)
Notes Tables
Revenues from Contracts with Customers (Tables)
Income Taxes (Tables)
Net Income Per Common Share (Tables)
Indebtedness (Tables)
Asset Retirement Obligations (Tables)
Derivative Activities (Tables)
Fair Value Measurements (Tables)
Stock-Based Compensation Plans (Tables)
Capital Stock (Tables)
Supplemental Cash Flow Information (Tables)
Commitments and Contingencies (Tables)
Exit Costs (Tables)
Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) (Tables)
Notes Details
Summary of Significant Accounting Policies - Additional Information (Detail)
Dispositions - Additional Information (Detail)
Revenues from Contracts with Customers - Additional Information (Detail)
Revenues from Contracts with Customers - Disaggregation of Revenue by Identified Revenue Stream (Detail)
Income Taxes - Additional Information (Detail)
Income Taxes - Reconciliation Between Statutory Federal Income Tax Rate and Effective Income Tax (Detail)
Income Taxes - Income Tax Expense (Benefit) Attributable to Income Before Income Taxes (Details)
Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Detail)
Net Income Per Common Share - Computations of Basic and Diluted Income (Loss) Per Common Share (Detail)
Net Income Per Common Share - Basic Weighted Average Common Shares Outstanding and Diluted Weighted Average Common Shares Outstanding (Detail)
Net Income Per Common Share - Additional Information (Detail)
Indebtedness - Additional Information (Detail)
Indebtedness - Debt Outstanding (Detail)
Indebtedness - Debt Outstanding (Parenthetical) (Detail)
Indebtedness - Bank Debt - Additional Information (Detail)
Indebtedness - Senior Note Redemptions - Additional Information (Detail)
Indebtedness - Guarantees and Debt Covenants and Maturity - Additional Information (Detail)
Indebtedness - Schedule for Long-Term Debt Outstanding (Detail)
Asset Retirement Obligations - Asset Retirement Obligations (Detail)
Derivative Activities - Additional Information (Detail)
Derivative Activities - Derivative Volumes Hedged and Average Hedge Prices (Detail)
Derivative Activities - Derivative Volumes Hedged and Average Hedge Prices (Parenthetical) (Detail)
Derivative Activities - Combined Fair Value of Derivatives, by Consolidated Balance Sheets (Detail)
Derivative Activities - Effects of Derivatives on Consolidated Statements of Income (Detail)
Fair Value Measurements - Fair Value Hierarchy Table for Assets and Liabilities Measured at Fair Value (Detail)
Fair Value Measurements - Additional Information (Detail)
Fair Value Measurements - Reconciliation of the Beginning and Ending Balances for Derivative Instruments Classified as Level 3 in the Fair Value Hierarchy (Detail)
Fair Value Measurements - Carrying Amounts and Fair Values of Financial Instruments (Detail)
Fair Value Measurements - Carrying Amounts and Fair Values of Financial Instruments (Parenthetical) (Detail)
Stock-Based Compensation Plans - Additional Information (Detail)
Stock-Based Compensation Plans - Allocation of Stock-Based Compensation by Functional Category (Detail)
Stock-Based Compensation Plans - Additional Information 1 (Detail)
Stock-Based Compensation Plans - Additional Information 2 (Detail)
Stock-Based Compensation Plans - Valuation Assumptions for Grant Date Fair Value of Performance Awards (Detail)
Stock-Based Compensation Plans - Restricted Stock and Restricted Stock Units and Performance Awards Outstanding (Detail)
Stock-Based Compensation Plans - Additional Information 3 (Detail)
Stock-Based Compensation Plans - Additional Information 4 (Detail)
Capital Stock - Additional Information (Detail)
Capital Stock - Schedule of Changes in Number of Common Shares Outstanding (Detail)
Capital Stock - Schedule of Change in Treasury Shares (Detail)
Supplemental Cash Flow Information - Supplemental Cash Flow Information (Detail)
Commitments and Contingencies - Additional Information (Details)
Commitments and Contingencies - Schedule of Components of Lease Expense (Detail)
Commitments and Contingencies - Supplemental Cash Flow Information Related to Operating Leases (Detail)
Commitments and Contingencies - Supplemental Balance Sheet Information Related to Operating Leases (Detail)
Commitments and Contingencies - Schedule of Weighted Average Remaining Lease Term and Weighted Average Discount Rate for Operating Leases (Detail)
Commitments and Contingencies - Schedule of Lease Liabilities with Enforceable Contract Terms are Greater Than One year Mature (Detail)
Commitments and Contingencies - Schedule of Future Minimum Transportation Fees Due (Detail)
Commitments and Contingencies - Schedule of Estimated Settlement of Divestiture Contract Obligation Based on Discounted Value (Detail)
Commitments and Contingencies - Future Delivery Commitments (Detail)
Exit Costs - Additional Information (Detail)
Exit Costs - Summary of Exit and Termination Costs (Detail)
Exit Costs - Exit and Termination Costs Included in Accrued Liabilities in Consolidated Balance Sheet - (Detail)
Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Capitalized Costs and Accumulated Depreciation, Depletion and Amortization (Detail)
Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Costs Incurred for Property Acquisition, Exploration and Development (Detail)
Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Additional Information (Detail)
Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Proved Developed and Undeveloped Reserves (Detail)
Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Changes in Proved Undeveloped Reserves (Detail)
Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Changes in Proved Undeveloped Reserves (Parenthetical) (Detail)
Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Standardized Measure of Discounted Future Net Cash Flows (Detail)
Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Standardized Measure of Discounted Future Net Cash Flows (Parenthetical) (Detail)
Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Changes in Discounted Future Net Cash Flows (Detail)
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