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Underlying Security Market Price Change, Percent Individual: Individual [Axis] Expected term (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Product and Service [Axis] Product and Service [Axis] Entity Address, State or Province Entity Address, State or Province Statement [Line Items] Statement [Line Items] Changes in working capital associated with additions to oil and natural gas properties Payments To Acquire Oil And Gas Property And Equipment, Changes In Working Capital Payments To Acquire Oil And Gas Property And Equipment, Changes In Working Capital Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Unvested stock units, beginning of period (in dollars per share) Unvested stock units, end of period (in 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Current Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Share Repurchase Program [Axis] Share Repurchase Program [Axis] TOTAL ASSETS Assets Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Aggregate fair value of equity instruments vested during the period Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Vested In Period, Fair Value Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Vested In Period, Fair Value Other long-term liabilities Other Liabilities, Noncurrent Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Amortization period Debt Issuance Costs, Amortization Period Debt Issuance Costs, Amortization Period COMMITMENTS AND CONTINGENCIES (Note 8) Commitments and Contingencies Impairment of oil and natural gas properties Impairment Of Proved Oil And Gas Properties Impairment Of Proved Oil And Gas Properties Magnolia LLC Units Magnolia LLC Units [Member] Magnolia LLC Units [Member] Acquisitions Asset Acquisition [Text Block] Termination Date Trading Arrangement Termination Date Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Total revenues Revenues Gathering, transportation and processing Gas Gathering, Transportation, Marketing And Processing Costs1 Gas Gathering, Transportation, Marketing and Processing Costs Stock Based Compensation Share-Based Payment Arrangement [Text Block] Consideration transferred for asset Asset Acquisition, Consideration Transferred Entity Address, City or Town Entity Address, City or Town Debt Instrument [Axis] Debt Instrument [Axis] Schedule of Carrying Value and Fair Value of Financial Instruments Not Carried at Fair Value Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Stock based compensation expense Share-Based Payment Arrangement, Expense NET INCOME ATTRIBUTABLE TO CLASS A COMMON STOCK Net income attributable to Class A Common Stock Net Income (Loss) Attributable to Parent Trading Arrangement: Trading Arrangement [Axis] Number of consecutive trading days required to earn PRSUs Share-Based Compensation Arrangement By Share-Based Payment Award, Milestone, Number Of Consecutive Trading Days Share-Based Compensation Arrangement By Share-Based Payment Award, Milestone, Number Of Consecutive Trading Days Conversion of Class B Common Stock to Class A Common Stock Stock Issued During Period, Value, Conversion of Convertible Securities Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Other Oil and Gas, Successful Efforts Method, Property and Equipment, Other Borrowing base Line of Credit Facility, Current Borrowing Capacity Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] PROPERTY, PLANT AND EQUIPMENT Property, Plant and Equipment, Net [Abstract] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Entity File Number Entity File Number Consolidated Entities [Domain] Consolidated Entities [Domain] Revenue Recognition Revenue from Contract with Customer [Text Block] Document Fiscal Year Focus Document Fiscal Year Focus Noncontrolling Interest Noncontrolling Interest [Member] Income Statement [Abstract] Income Statement [Abstract] Entity Address, Address Line One Entity Address, Address Line One Federal Current Federal Tax Expense (Benefit) Class A Common Stock repurchases Total cost of shares repurchased Treasury Stock, Value, Acquired, Cost Method Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Dividends declared Dividends Declared by the Company Dividends, Common Stock Name Forgone Recovery, Individual Name Document Period End Date Document Period End Date Percentage of interest owned Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage Other Other Noncash Income (Expense) Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Net liabilities assumed in connection with acquisitions Asset Acquisition, Liabilities Assumed Asset Acquisition, Liabilities Assumed Unvested stock units, beginning of period (in shares) Unvested stock units, end of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Insider Trading Arrangements [Line Items] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Valuation Allowance [Table] Deferred Tax Asset, Valuation Allowance [Table] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Adjustment to Compensation: Adjustment to Compensation [Axis] LESS: Net income attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Document Transition Report Document Transition Report Document Quarterly Report Document Quarterly Report Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Entity Current Reporting Status Entity Current Reporting Status Retained Earnings Retained Earnings [Member] Percentage of interest owned by noncontrolling interest holders Subsidiary, Ownership Percentage, Noncontrolling Owner Amortization of deferred financing costs Amortization of Debt Issuance Costs Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Oil and Natural Gas Producing Properties, Giddings Area Oil And Natural Gas Producing Properties, Giddings Area [Member] Oil And Natural Gas Producing Properties, Giddings Area Accrued capital expenditures Accrued Capital Expenditures, Current Accrued Capital Expenditures, Current Asset Acquisition [Domain] Asset Acquisition [Domain] Basic (in shares) Weighted average number of common shares outstanding during the period - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Number of votes for each share held Common Stock, Voting Rights, Number Of Votes Per Share Common Stock, Voting Rights, Number Of Votes Per Share Total equity Beginning balance Ending balance Equity, Including Portion Attributable to Noncontrolling Interest RSUs Restricted Stock Units Restricted Stock Units (RSUs) [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Executive Category: Executive Category [Axis] Share Repurchase Program Share Repurchase Program [Member] Share Repurchase Program Name Awards Close in Time to MNPI Disclosures, Individual Name Schedule of Income Tax Provision Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Entity Filer Category Entity Filer Category Schedule of Other Current Liabilities Other Current Liabilities [Table Text Block] Letter of Credit Sublimit Letter of Credit [Member] Company Selected Measure Name Company Selected Measure Name