Oil (per barrel) Oil Per Barrel [Member] Represents the petroleum extracted from the ground. Proved developed reserves (in Bbls/Mcf) Proved Developed Reserves (Volume) Amount authorized to be repurchased Stock Repurchase Program, Authorized Amount Net changes in sales prices and production costs related to future production Net Increase (Decrease) in Sales and Transfer Prices and Production Costs Name of Major Customer [Domain] Customer [Domain] Income tax provision (benefit) computed at the statutory federal rate: Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Earnings (Loss) Per Share Earnings Per Share, Policy [Policy Text Block] Property acquisition costs: Costs Incurred, Acquisition of Oil and Gas Properties [Abstract] Payable for settled derivatives Settled Derivatives Payable Settled Derivatives Payable Other Effective Income Tax Rate Reconciliation, Federal Changes In Valuation Allowance 382 NOL, Amount Effective Income Tax Rate Reconciliation at Federal Changes In Valuation Allowance 382 NOL, Amount State Current State and Local Tax Expense (Benefit) Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Net income (loss) attributable to common shareholders Net Income (Loss) Attributable to Parent Entity Emerging Growth Company Entity Emerging Growth Company Effective Income Tax Rate Reconciliation, Amount [Abstract] Effective Income Tax Rate Reconciliation, Amount [Abstract] Operating lease ROU asset (included in other assets) Operating Lease, Right-of-Use Asset Risks and Uncertainties [Abstract] Risks and Uncertainties [Abstract] Net operating loss carry-forwards and other carry-forwards Deferred Tax Assets, Operating Loss Carryforwards Income Statement Location [Axis] Income Statement Location [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Future net cash flows Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Net Cash Flows Oil and Gas, Average Sale Price and Production Cost Per Unit [Table] Oil and Gas, Average Sale Price and Production Cost Per Unit [Table] Directors Share-based Payment Arrangement, Nonemployee [Member] Acquisition of oil and gas properties Payments to Acquire Oil and Gas Property Quarterly Financial Information Disclosure [Abstract] Quarterly Financial Information Disclosure [Abstract] Restricted Stock And Contingent Restricted Stock, Market-Based Restricted Stock And Contingent Restricted Stock, Market-Based [Member] Restricted Stock And Contingent Restricted Stock, Market-Based [Member] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Entity Filer Category Entity Filer Category Weighted average remaining lease term in years Operating Lease, Weighted Average Remaining Lease Term Other assets, net Other Assets, Noncurrent Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Derivative Instruments Derivatives, Policy [Policy Text Block] Dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Shares available for grant (shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Net decrease in cash, cash equivalents, and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Perpetual royalty percentage Perpetual Royalty Revenue, Percentage Perpetual Royalty Revenue, Percentage Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Energy [Domain] Energy [Domain] Stock-based compensation APIC, Share-based Payment Arrangement, Increase for Cost Recognition Gas (per million BTU) Gas Per Millions of B T U [Member] Methane gas extracted from the ground and sold by oil industry companies that are measured in million british thermal units (MMBtu). Document Fiscal Year Focus Document Fiscal Year Focus Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Decrease in accrued purchases of property and equipment Increase (Decrease) in Accounts Payable Used to Acquire Property and Equipment Increase (Decrease) in Accounts Payable Used to Acquire Property and Equipment Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Outstanding (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Weighted average discount rate Operating Lease, Weighted Average Discount Rate, Percent Revisions of previous estimates (in Bbls/Mcf) Proved Developed and Undeveloped Reserves, Revisions of Previous Estimates Number of product types Number Of Product Types Number Of Product Types Subsequent Events [Abstract] Tax loss carryforward from reverse merger Tax Credit Carryforward, Amount, Due to Reverse Merger Tax Credit Carryforward, Amount, Due to Reverse Merger Prepaid federal and state income taxes Prepaid Taxes Net deferred tax assets Deferred Tax Assets, Net of Valuation Allowance Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Commitment fee percentage Line of Credit Facility, Commitment Fee Percentage Grant-date fair value of vested Restricted Stock Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Weighted average fair value of market-based awards granted (in USD per share) Granted (in USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Business Acquisition [Axis] Business Acquisition [Axis] Title of Individual [Domain] Title of Individual [Domain] Award Type [Domain] Award Type [Domain] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Credit Facility [Domain] Credit Facility [Domain] Assets Assets [Abstract] Depletion in excess of tax basis Effective Income Tax Rate Reconciliation, Nondeductible Expense, Depletion, Percent Carryforward from reverse merger Deferred Taxes Business Combination Operating Loss Carryforwards Amount Available to Use Amount of operating loss carry-forwards recorded in a business combination which is available in equal amounts to reduce future taxable income under enacted tax laws. Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Derivatives Derivative Instruments and Hedging Activities Disclosure [Text Block] Shares granted (in shares) Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Percent of Total Revenue Concentration Risk, Percentage Other Property and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Minimum current ratio Debt Instrument, Covenant, Minimum Current Ratio Debt Instrument, Covenant, Minimum Current Ratio Entity Address, City or Town Entity Address, City or Town Schedule of costs incurred and capitalized in oil and natural gas property acquisition, exploration and development activities Cost Incurred in Oil and Gas Property Acquisition, Exploration, and Development Activities Disclosure [Table Text Block] Retained Earnings Retained Earnings [Member] Debt Instrument [Axis] Debt Instrument [Axis] Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Accretion of discount Asset Retirement Obligation, Accretion Expense Oil and natural gas properties: Oil and Gas Property [Abstract] Other Liabilities Disclosure [Abstract] Other Liabilities Disclosure [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Sales of minerals in place (in Bbls/Mcf) Proved Developed and Undeveloped Reserves, Sales of Minerals in Place Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Capital expenditures Capital Expenditures Incurred but Not yet Paid Average Sales Price and Production Costs Per Unit of Production [Line Items] Oil and Gas, Average Sale Price and Production Cost Per Unit [Line Items] Less: Accumulated depreciation Property, Plant and Equipment, Other, Accumulated Depreciation ROU asset added in exchange for lease obligation at adoption Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Schedule of components of deferred taxes Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Summary of Significant Accounting Policies Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Entity Interactive Data Current Entity Interactive Data Current Prime Rate Prime Rate [Member] Basic (in dollars per share) Net income per common share - Basic (in dollars per share) Basic earnings (loss) per common share (in dollars per share) Earnings Per Share, Basic Other Assets, Net Other Assets Disclosure [Text Block] Revenue Recognition Revenue from Contract with Customer [Text Block] Unvested, beginning of period (in shares) Unvested, end of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Document Type Document Type Long term liabilities Long-term Debt, Excluding Current Maturities [Abstract] Sales of oil and gas produced during the period, net of production costs Sales and Transfers of Oil and Gas Produced, Net of Production Costs Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Limitation on Capitalized Costs Exploratory Drilling Costs Capitalization and Impairment, Policy [Policy Text Block] Estimates of Proved Reserves Estimates Of Proved Reserves [Policy Text Block] Estimates Of Proved Reserves Payments received (paid) for derivative settlements Proceeds From (Payments For) Derivative Settlements Proceeds From (Payments For) Derivative Settlements Number of Restricted Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Unrealized (gain) loss Unrealized Gain (Loss) on Derivatives Entity Current Reporting Status Entity Current Reporting Status Schedule of Restricted Stock transactions Schedule of Nonvested Share Activity [Table Text Block] Investment in Well Lift Inc., at cost Investment Owned, at Cost Net deferred tax liability Deferred Tax Liabilities, Net Shares authorized for granting (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Cash paid for amounts included in the measurement of lease liabilities Operating Lease, Payments Development costs incurred during the period Previously Estimated Development Costs Incurred Oil and natural gas properties (a) Deferred Tax Liabilities, Property, Plant and Equipment Supplemental cash flow, balance sheet and other information Assets And Liabilities And Lease Costs, Lessee [Table Text Block] Assets And Liabilities And Lease Costs, Lessee [Table Text Block] Plan Name [Axis] Plan Name [Axis] Less: Accumulated amortization of deferred loan costs Accumulated Amortization, Debt Issuance Costs Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Interest and other income Investment Income, Interest and Other Investment Income, Interest and Other Other Other Operating Activities, Cash Flow Statement Document Transition Report Document Transition Report Impairment expense Other than Temporary Impairment Losses, Investments Weighted average number of common shares outstanding Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] State income taxes, net of federal tax benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Operating Lease Liability Maturity Lessee, Operating Lease, Liability, Payment, Due [Abstract] EOR credit benefit Effective Income Tax Rate Reconciliation, Tax Credit, Other, Percent Right of use asset under operating lease Operating Lease Right Of Use Asset Gross Operating Lease Right Of Use Asset Gross Other Effective Income Tax Rate Reconciliation at Federal Changes In Valuation Allowance 382 NOL,Percent Effective Income Tax Rate Reconciliation at Federal Changes In Valuation Allowance 382 NOL,Percent EOR credit benefit Effective Income Tax Rate Reconciliation, Tax Credit, Other, Amount Asset Retirement Obligations Asset Retirement Obligation [Policy Text Block] Total liabilities and stockholders' equity Liabilities and Equity Accrued - other Other Accrued Liabilities, Current Impairment of Well Lift Inc. - related assets Other Asset Impairment Charges Delhi Field Property Delhi Field Property [Member] Represents the Delhi Field property in Northeast Louisiana. Additional paid-in capital Additional Paid in Capital Barnett Shale Barnett Shale [Member] Barnett Shale Supplemental Cash Flow Elements [Abstract] Supplemental Cash Flow Elements [Abstract] Oil and natural gas properties Oil and Gas Properties [Member] Net change due to extensions, discoveries, and improved recovery Extensions, Discoveries, Additions and Improved Recovery, Less Related Costs Concentrations of Credit Risk Concentration Risk [Line Items] Liabilities and Stockholders' Equity Liabilities and Equity [Abstract] Number of abandoned wells Oil And Gas, Abandoned Well, Number Of Wells Oil And Gas, Abandoned Well, Number Of Wells Derivative [Line Items] Derivative [Line Items] Property and equipment, net of depreciation, depletion, and amortization Property, Plant and Equipment, Net [Abstract] Balance at the beginning of the period (in Bbls/Mcf) Balance at the end of the period (in Bbls/Mcf) Proved Developed and Undeveloped Reserves, Net Future development costs Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Development Costs Schedule of prepaid expenses and other current assets Schedule of Other Current Assets [Table Text Block] Earnings (Loss) per Common Share Earnings Per Share [Text Block] Common share repurchases, including shares surrendered for tax withholding Treasury Stock Purchases Treasury Stock, Value, Acquired, Cost Method Derivative contract liabilities Derivative Liability, Current Federal valuation allowance Effective Income Tax Rate Reconciliation, Federal Expiration Of Section 382 NOL, Amount Effective Income Tax Rate Reconciliation at Federal Expiration Of Section 382 NOL, Amount Operating costs Operating Expenses [Abstract] Treasury stock acquired, average cost (in USD per share) Average Price per Share (in USD per share) Treasury Stock Acquired, Average Cost Per Share Royalty rights Royalty Rights Royalty Rights Minimum Minimum [Member] Organization and Basis of Preparation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Long-term line of credit Long-term Line of Credit 2023 Lessee, Operating Lease, Liability, to be Paid, Year Two Debt issuance costs Debt Issuance Costs, Net Unrecognized tax benefits Unrecognized Tax Benefits Well Lift Inc. Well Lift Inc. [Member] Well Lift Inc. [Member] Gross deferred tax assets Deferred Tax Assets, Gross Income Tax Authority [Domain] Income Tax Authority [Domain] Oil and natural gas property costs attributable to the recognition of asset retirement obligations Asset retirement obligations Asset Retirement Obligation Liabilities Incurred Net Amount of asset retirement obligations incurred during the period, net of certain increases or decreases in the amount of the asset retirement obligation during the current period that may include changes in the amount or timing of the estimated cash flows associated with the settlement of the obligation. Estimated quantities of proved oil and natural gas reserves and changes in quantities of proved developed and undeveloped reserves Proved Developed and Undeveloped Reserve (Energy) [Roll Forward] Schedule of share repurchases Schedule Of Share Repurchases [Table Text Block] Schedule Of Share Repurchases [Table Text Block] Asset retirement obligation liabilities incurred Liabilities incurred Asset Retirement Obligation, Liabilities Incurred Trading Symbol Trading Symbol Current liabilities Liabilities, Current [Abstract] Revisions of previous estimates (in BOE) Proved Developed and Undeveloped Reserve, Revision of Previous Estimate (Energy) Revenue Recognition - Oil and Natural Gas Revenue [Policy Text Block] Schedule of changes in the standardized measure of discounted future net cash flows applicable to proved crude oil, natural gas liquids, and natural gas reserves Schedule of Changes in Standardized Measure of Discounted Future Net Cash Flows [Table Text Block] General and administrative expenses General and Administrative Expense Supplemental Disclosure of Cash Flow Information Cash Flow, Supplemental Disclosures [Text Block] Senior Secured Credit Agreement Debt Disclosure [Text Block] Balance (shares) Balance (shares) Shares, Outstanding Schedule of components of income tax provision (benefit) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Income tax refunds Proceeds from Income Tax Refunds Issuance of restricted common stock Stock Issued During Period, Value, Restricted Stock Award, Gross Line of Credit Line of Credit [Member] Accrued retirement costs Liability, Retirement and Postemployment Benefits Stock-Based Incentive Plan Share-based Payment Arrangement [Text Block] Common stock dividends paid Common stock dividends paid Payments of Ordinary Dividends, Common Stock Accrued interest and penalties Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Accounting Policies [Abstract] Accounting Policies [Abstract] Derivative Instrument [Axis] Derivative Instrument [Axis] Commodity Prices Used in Determining Future Cash Flows (in USD per barrel) Commodity Prices Used In Determining Future Cash Flows, Per Unit Commodity Prices Used In Determining Future Cash Flows, Per Unit Net change in discounted income taxes Changes in Future Income Tax Expense Estimates on Future Cash Flows Related to Proved Oil and Gas Reserves Sales of minerals in place (in BOE) Proved Developed and Undeveloped Reserves, Sale of Mineral in Place (Energy) Unproved property Costs Incurred, Acquisition of Unproved Oil and Gas Properties Federal Current Federal Tax Expense (Benefit) Total lease liability Operating Lease, Liability Common stock; par value $0.001; 100,000,000 shares authorized: issued and outstanding 33,514,952 and 32,956,469 shares as of June 30, 2021 and 2020, respectively Common Stock, Value, Issued Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Weighted Average Remaining Amortization Period (Years) Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Major Customers Customer Concentration Risk [Member] Weighted Average Exercise Price (in dollars per share) Antidilutive Securities Excluded from Computation of Earnings Per Share Weighted Average Exercise Price Represents the weighted average exercise price of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Unvested, beginning of period (in USD per share) Unvested, end of period (in USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Commitments and contingencies Commitments and Contingencies Subsequent Event [Table] Subsequent Event [Table] Leases Lessee, Operating Leases [Text Block] Depletion in excess of tax basis Effective Income Tax Rate Reconciliation, Nondeductible Expense, Depletion, Amount Class of Treasury Stock [Table] Class of Treasury Stock [Table] Development costs Costs Incurred, Development Costs Restricted Stock Restricted Stock [Member] Revisions of previous estimates Asset Retirement Obligation, Revision of Estimate Schedule of Valuation Assumptions Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Ownership [Axis] Ownership [Axis] Document Period End Date Document Period End Date Contingent restricted stock grants (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Class of Stock [Axis] Class of Stock [Axis] Entity Registrant Name Entity Registrant Name Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Other Current Liabilities Other Current Liabilities [Table Text Block] Less imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Income Tax Authority [Axis] Income Tax Authority [Axis] Depreciation, depletion, and amortization Depreciation Depletion and Amortization Cash Flows Impact The net cash impact recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. Other Property and Equipment Other property and equipment: Property, Plant and Equipment, Other, Net [Abstract] Prepaid expenses and other current assets Total prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Dividend declared (in dollars per share) Common Stock, Dividends, Per Share, Declared Accrued liabilities and other Accrued Liabilities, Current Total revenues Total revenues Revenue from Contract with Customer, Excluding Assessed Tax Non-qualified stock-based compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost Placement fee percentage Line of Credit Facility, Placement Fee Percentage Line of Credit Facility, Placement Fee Percentage Return to provision adjustments Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense (Benefit) Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense (Benefit) Crude Oil Oil [Member] Numerator Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Dividends declared and paid Dividends Declared [Table Text Block] Current: Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Exploration costs Costs Incurred, Exploration Costs Equity [Abstract] Equity [Abstract] Oil and Gas Exploration and Production Industries Disclosures [Abstract] Oil and Gas Exploration and Production Industries Disclosures [Abstract] Measurement Input Type [Domain] Measurement Input Type [Domain] Weighted Average Ceiling Price per Bbl. (in USD per barrel) Derivative, Average Cap Price Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Common Stock Common Stock [Member] Debt Instrument, Variable Rate Base [Axis] Variable Rate [Axis] Income (loss) from operations Income (loss) from operations Operating Income (Loss) Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Number of finance lease contracts Lessee, Finance Lease, Number Of Contracts Lessee, Finance Lease, Number Of Contracts Operating lease liability, current Operating Lease, Liability, Current Schedule of reconciliation of the beginning and ending asset retirement obligation Schedule of Change in Asset Retirement Obligation [Table Text Block] Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Non-cash stock-based compensation expense Stock-based compensation Share-based Payment Arrangement, Noncash Expense Proved Developed and Undeveloped Oil and Gas Reserve Quantities [Table] Proved Developed and Undeveloped Oil and Gas Reserve Quantities [Table] Variable Rate [Domain] Variable Rate [Domain] Restricted Stock, Service Based Restricted Stock, Service Based [Member] Restricted Stock, Service Based [Member] Risk and Uncertainties Risks And Uncertainties [Policy Text Block] Risks And Uncertainties [Policy Text Block] Additional Paid-in Capital Additional Paid-in Capital [Member] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Depreciation Depreciation Number of vesting tranches Share-based Compensation Arrangement by Share-based Payment Award, Number Of Vesting Tranches Share-based Compensation Arrangement by Share-based Payment Award, Number Of Vesting Tranches Cash dividends paid (in USD per share) Common Stock, Dividends, Per Share, Cash Paid Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Treasury Stock Treasury Stock [Member] Net loss on derivative contracts Net loss on derivative contracts Net (gain) loss on derivative contracts Gain (Loss) on Derivative Instruments, Net, Pretax Derivative losses Deferred Tax Assets, Derivative Instruments Schedule of Restricted Stock Activity Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Income taxes paid Income Taxes Paid Borrowings under credit facility Proceeds from Lines of Credit Non-operating working interest, percent Non-Operating Working Interest, Percent Non-Operating Working Interest, Percent Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Open positions Derivative, Notional Amount Property costs subject to amortization Oil and Gas Property, Full Cost Method, Gross Permanent differences related to stock-based compensation and other Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Payment Arrangement, Amount Proved developed reserves (in BOE) Proved Developed Reserves (Energy) Annual amount of carryforward from reverse merger through 2023 Deferred Taxes Business Combination Operating Loss Carryforwards Annual Amount Available to Use Deferred Taxes Business Combination Operating Loss Carryforwards Annual Amount Available to Use Prepaid insurance Prepaid Insurance Total Accrued liabilities and other Other Liabilities, Current Reconciliation of the beginning and ending asset retirement obligation Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] Accrued Liabilities and Other Other Liabilities Disclosure [Text Block] Maximum Maximum Maximum [Member] Effective Income Tax Rate Reconciliation, Percent [Abstract] Effective Income Tax Rate Reconciliation, Percent [Abstract] Share-based Payment Arrangement [Abstract] Share-based Payment Arrangement [Abstract] Number of operating lease contracts Lessee, Operating Lease, Number Of Contracts Lessee, Operating Lease, Number Of Contracts Total liabilities Liabilities Deferred tax assets: Deferred Tax Assets, Net [Abstract] Receivables Increase (Decrease) in Receivables Award Type [Axis] Award Type [Axis] Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Schedule of future minimum lease commitments under the operating lease Lessee, Operating Lease, Liability, Maturity [Table Text Block] Measurement Input Type [Axis] Measurement Input Type [Axis] Total stockholders' equity Balance Balance Stockholders' Equity Attributable to Parent Debt service coverage ratio (not less than) Debt Service Coverage Ratio Debt Service Coverage Ratio Common stock, issued shares (in shares) Common Stock, Shares, Issued Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Oil and natural gas properties—full-cost method of accounting, of which none were excluded from amortization Oil and natural gas properties, net Oil and Gas Property, Full Cost Method, Net Future production costs and severance taxes Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Production Costs Schedule of supplemental disclosures of cash flow information Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Limitation on Capitalized Costs Limitation on Capitalized Costs [Abstract] Document Annual Report Document Annual Report Shares surrendered for tax withholding upon vesting Shares Surrendered For Tax Withholding Upon Vesting [Member] Shares Surrendered For Tax Withholding Upon Vesting [Member] Restricted Stock, Performance Based Restricted Stock, Performance Based [Member] Restricted Stock, Performance Based [Member] Common share repurchases, including shares surrendered for tax withholding Payments for Repurchase of Common Stock Expected lives of the individual assets or group of assets Property, Plant and Equipment, Useful Life Number of short-term lease contracts Lessee, Short-Term Lease, Number Of Contracts Lessee, Short-Term Lease, Number Of Contracts Stockholders' equity Stockholders' Equity Attributable to Parent [Abstract] Changes in estimated future development costs Changes in Estimated Future Development Costs Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Less: Accumulated amortization of right of use asset Operating Lease Right Of Use Asset Accumulated Amortization Operating Lease Right Of Use Asset Accumulated Amortization Federal valuation allowance Effective Income Tax Rate Reconciliation at Federal Expiration Of Section 382 NOL,Percent Effective Income Tax Rate Reconciliation at Federal Expiration Of Section 382 NOL,Percent Risk-free interest rate, minimum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Operating lease liability Operating lease liability - long-term Operating Lease, Liability, Noncurrent Total current income tax provision (benefit) Current Income Tax Expense (Benefit) Interest expense Interest Expense Deferred: Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Future income tax expenses Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Income Tax Expense Expected volatility, maximum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum City Area Code City Area Code Retained earnings Retained Earnings (Accumulated Deficit) Entity Public Float Entity Public Float Oil Crude Oil [Member] Asset retirement obligations—beginning of period Asset retirement obligations—ending of period Asset Retirement Obligation Expiration period (in years) Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Accrued franchise taxes Accrual for Taxes Other than Income Taxes, Current Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Total deferred tax liability Deferred Tax Liabilities, Gross Type of Reserve [Domain] Type of Reserve [Domain] Derivative Instruments, Gain (Loss) Derivative Instruments, Gain (Loss) [Table Text Block] Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Share Repurchase Program [Axis] Share Repurchase Program [Axis] Income Statement [Abstract] Income Statement [Abstract] Amendment Flag Amendment Flag Concentration Risk [Table] Concentration Risk [Table] Estimated quantities of proved oil and natural gas reserves and changes in quantities of proved developed and undeveloped reserves Proved Developed and Undeveloped Reserves [Roll Forward] Asset Retirement Obligations Asset Retirement Obligation Disclosure [Text Block] Future cash inflows Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Cash Inflows Purchase of reserves in place (in BOE) Proved Developed and Undeveloped Reserve, Purchase of Mineral in Place (Energy) Repayments of credit facility Repayments of Lines of Credit Balance at the beginning of the period (in BOE) Balance at the end of the period (in BOE) Proved Developed and Undeveloped Reserve, Net (Energy) Issuance of restricted common stock (shares) Stock Issued During Period, Shares, Restricted Stock Award, Gross Income tax expense (benefit) Income tax provision (benefit) Income Tax Expense (Benefit) Unproved properties not subject to amortization Capitalized Costs of Unproved Properties Excluded from Amortization, Cumulative Number of wells with overriding royalty interest Number Of Wells With Overriding Royalty Interest Number Of Wells With Overriding Royalty Interest Receivables from oil and gas sales Receivables from oil and gas sales Accounts Receivable, after Allowance for Credit Loss, Current Equity Components [Axis] Equity Components [Axis] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Entity Voluntary Filers Entity Voluntary Filers Total current assets Assets, Current Concentration Risk Type [Domain] Concentration Risk Type [Domain] Total lease payments Lessee, Operating Lease, Liability, to be Paid Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Forfeited (in shares) Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Revenue interest, percent Revenue Interest, Percent Revenue Interest, Percent Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Entity File Number Entity File Number Stock-based Compensation Share-based Payment Arrangement [Policy Text Block] Federal Deferred Federal Income Tax Expense (Benefit) Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Restricted Stock and Contingent Restricted Stock Restricted Stock And Contingent Restricted Stock [Member] Restricted Stock And Contingent Restricted Stock [Member] Valuation allowance, deferred tax asset, increase Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Product and Service [Axis] Product and Service [Axis] Long-Lived Tangible Asset [Domain] Long-Lived Tangible Asset [Domain] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Small Business Entity Small Business Grantee Status [Axis] Grantee Status [Axis] Permanent differences related to stock-based compensation and other Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Payment Arrangement, Percent Unamortized compensation expense Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Chief Executive Officer Chief Executive Officer [Member] Equity Component [Domain] Equity Component [Domain] Shares outstanding (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number Period considered for computing unweighted arithmetic average of oil and natural gas prices (in months) Period Considered for Unweighted Arithmetic Average for Determining Oil and Natural Gas Prices Represents the period considered for calculating unweighted arithmetic average which is used to compute oil and natural gas prices. 2022 Lessee, Operating Lease, Liability, to be Paid, Year One Merit Energy Company (Hamilton Dome field oil) Merit Energy Company [Member] Merit Energy Company [Member] Accrued incentive and other compensation Accrued Salaries Deferred loan costs Debt Issuance Costs, Gross Petroleum Reserves [Axis] Petroleum Reserves [Axis] Income taxes payable Increase (Decrease) in Accrued Taxes Payable Statement [Line Items] Statement [Line Items] Development of oil and natural gas properties Payment for Development of Oil and Gas Properties Represents the cash outflow in relation to the development of oil and gas properties during the reporting period. Production (sales volumes) (in Bbls/Mcf) Proved Developed and Undeveloped Reserves, Production Forfeitures of restricted stock (shares) Stock Issued During Period, Shares, Restricted Stock Award, Forfeited Senior secured credit facility Long-term Line of Credit, Noncurrent Grantee Status [Domain] Grantee Status [Domain] Federal Domestic Tax Authority [Member] 2015 Share Repurchase Program 2015 Share Repurchase Program [Member] 2015 Share Repurchase Program [Member] Revenue Recognition - Oil and Gas Revenue Recognition [Abstract] Oil and Natural Gas Properties Full Cost or Successful Efforts, Policy [Policy Text Block] Schedule of NYMEX prices used in determining future cash flows Oil and Gas, Average Sale Price and Production Cost [Table Text Block] Retirements of treasury stock Treasury Stock, Retired, Cost Method, Amount Debt Disclosure [Abstract] Debt Disclosure [Abstract] Entity Address, State or Province Entity Address, State or Province Weighted Average Floor Price per Bbl. (in USD per barrel) Derivative, Average Floor Price Income (loss) before income tax provision Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Asset retirement obligations due within one year Asset Retirement Obligation, Current Other Property and Equipment Other Capitalized Property Plant and Equipment [Member] Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Axis] Valuation allowance Deferred Tax Assets, Valuation Allowance Realized (gain) loss Derivative, Gain (Loss) on Derivative, Net Oil Swap July To December 2020 Commodity Contract [Member] Major Customers [Axis] Customer [Axis] Use of Estimates Use of Estimates, Policy [Policy Text Block] Schedule of computation of basic and diluted income (loss) per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Entity Shell Company Entity Shell Company Prepaid other Prepaid Investor Relations And Other Prepaid Investor Relations And Other Local Phone Number Local Phone Number Less: Accumulated depreciation, depletion, and amortization and impairment Oil and Gas Property, Full Cost Method, Depletion Price / Price Range (in USD per barrel) Derivative, Swap Type, Fixed Price Total assets Assets Other Awards Restricted Stock and Contingent Restricted Stock, Other Awards [Member] Restricted Stock and Contingent Restricted Stock, Other Awards [Member] Plan Name [Domain] Plan Name [Domain] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Depreciation, Depletion and Amortization (“DD&A”) Depreciation, Depletion, and Amortization [Policy Text Block] Interest paid on the Senior Secured Credit Facility Interest Paid, Excluding Capitalized Interest, Operating Activities Title of Individual [Axis] Title of Individual [Axis] Net income (loss) attributable to common shareholders Net income (loss) attributable to common stockholders Net income (loss) attributable to common shareholders Net Income (Loss) Available to Common Stockholders, Basic Proved undeveloped reserves (in Bbls/Mcf) Proved Undeveloped Reserve (Volume) All others All Other Customers [Member] American Midstream Gas Solutions [Member] Product and Service [Domain] Product and Service [Domain] Derivative Contract [Domain] Derivative Contract [Domain] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Period considered for determining unweighted arithmetic average of first day of month, commodity Prices Period Considered for Determining Unweighted Arithmetic Average of First Day of Month, Commodity Prices Represents the period considered for determining unweighted arithmetic average of first-day-of-the-month commodity prices. Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Revolving Credit Facility Revolving Credit Facility [Member] Standardized measure of discounted future net cash flows Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Net Cash Flows [Abstract] Net price per barrel (in dollars per barrel) Oil and Gas, Average Production Cost Per Unit Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Senior Secured Reserve-Based Credit Facility Senior Secured Reserve-Based Credit Facility [Member] Senior Secured Reserve-Based Credit Facility [Member] Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Entity Tax Identification Number Entity Tax Identification Number Deferred Financing Costs Deferred Charges, Policy [Policy Text Block] Subsequent Event [Line Items] Subsequent Event [Line Items] Return to provision adjustments Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense (Benefit), Percent Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense (Benefit), Percent Other assets, net Deferred Costs and Other Assets Natural Gas and Natural Gas Liquids Natural Gas and Natural Gas Liquids [Member] Basic (in shares) Weighted average number of common shares—Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in dollars per share) Net income per common share - Diluted (in dollars per share) Diluted earnings (loss) per common share (in dollars per share) Earnings Per Share, Diluted Effect of dilutive securities: Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract] State and Local Jurisdiction State and Local Jurisdiction [Member] Liabilities acquired Asset Retirement Obligation, Liabilities Acquired Asset Retirement Obligation, Liabilities Acquired Net revenue Sales [Member] Subsequent Events Subsequent Events [Text Block] Selected Quarterly Financial Data (Unaudited) Quarterly Financial Information [Text Block] Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Settlement of asset retirement obligations Asset Retirement Obligation, Cash Paid to Settle Denominator Weighted Average Number of Shares Outstanding, Diluted [Abstract] Deferred income taxes Deferred Income Tax Liabilities, Net Minimum consolidated tangible net worth Line of Credit Facility, Covenant Compliance, Minimum Consolidated Tangible Net Worth Line of Credit Facility, Covenant Compliance, Minimum Consolidated Tangible Net Worth Vesting period (in years) Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Less: Accumulated amortization of royalty rights Accumulated Amortization, Royalty Rights Accumulated Amortization, Royalty Rights Accrued ad valorem taxes Sales and Excise Tax Payable Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Purchase of reserves in place (in Bbls/Mcf) Proved Developed and Undeveloped Reserves, Purchases of Minerals in Place Forfeitures of restricted stock Stock Issued During Period, Value, Restricted Stock Award, Forfeitures Furniture, fixtures, and office equipment, at cost Property, Plant and Equipment, Other, Gross Fair Value Measurement Fair Value Disclosures [Text Block] Schedule of reconciliation of statutory income tax expense to income tax provision Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Accounts payable Accounts Payable, Current Other property and equipment, net Other property and equipment, net Property, Plant and Equipment, Other, Net Concentration Risk Type [Axis] Concentration Risk Type [Axis] Depreciation, depletion, and amortization Depreciation, Depletion and Amortization Energy [Axis] Energy [Axis] Abandoned wells in next twelve months Oil And Gas, Abandoned Wells In Next Twelve Months, Number Of Wells Oil And Gas, Abandoned Wells In Next Twelve Months, Number Of Wells Common stock dividends paid Dividends, Common Stock Less: Accumulated amortization of software license Capitalized Computer Software, Accumulated Amortization Common stock, outstanding shares (in shares) Common stock, outstanding shares (in shares) Common Stock, Shares, Outstanding Derivative [Table] Derivative [Table] Retirements of treasury stock (in shares) Treasury Stock, Shares, Retired Lease operating costs Oil and Gas, Exploration and Production [Member] Hamilton Dome Field Hamilton Dome Field [Member] Hamilton Dome Field [Member] Lease operating costs Cost of Goods and Services Sold Revenues Revenues [Abstract] Deferred tax liability: Deferred Tax Liabilities, Net [Abstract] Receivables for federal and state income tax refunds Receivable for income tax refunds Income Taxes Receivable Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Summary of quarterly financial information Quarterly Financial Information [Table Text Block] Period considered for unweighted arithmetic average Period Considered for Unweighted Arithmetic Average for Determining Reserve Volumes and Values Represents the period considered for calculating unweighted arithmetic average which is used to determine reserve volumes and values of oil and natural gas prices. State income taxes, net of federal tax benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent State Deferred State and Local Income Tax Expense (Benefit) Schedule of oil and natural gas properties and other property and equipment Property, Plant and Equipment [Table Text Block] Term of debt instrument Debt Instrument, Term Income Statement Location [Domain] Income Statement Location [Domain] Volumes in Barrels Derivative, Nonmonetary Notional Amount, Volume Non-cash transactions: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Depletion Depletion Number of additional shares authorized (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized Contingent restricted stock grants Contingent Restricted Stock Grants Contingent Restricted Stock grants Contingent Restricted Stock Grants [Member] Contingent Restricted Stock Grants [Member] Concentrations of Credit Risk Concentration Risk Disclosure [Text Block] Total property and equipment, net Property, Plant and Equipment, Net Property and Equipment, Net of Depreciation, Depletion, and Amortization Property, Plant and Equipment Disclosure [Text Block] Total operating costs Operating Expenses 10% annual discount for estimated timing of cash flows Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Ten Percent Annual Discount for Estimated Timing of Cash Flows Employee Share-based Payment Arrangement, Employee [Member] Software license Capitalized Computer Software, Gross Purchases of treasury stock (in shares) Number of treasury shares acquired (in shares) Treasury Stock, Shares, Acquired Carryback of EOR tax credit Operating Loss Carryback, Current Operating Loss Carryback, Current Debt Instrument [Line Items] Debt Instrument [Line Items] Earnings Per Share [Abstract] Earnings Per Share [Abstract] Natural gas liquids Natural Gas Liquids [Member] Maximum total leverage ratio (not more than) Debt Covenant, Maximum Total Leverage Ratio Debt Covenant, Maximum Total Leverage Ratio Accretion of discount Standardized Measure of Discounted Future Net Cash Flow Relating to Proved Oil and Gas Reserves, Accretion of Discount Production (sales volumes) (in BOE) Proved Developed and Undeveloped Reserve, Production (Energy) Allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss Revenues Revenues 2016 Equity Incentive Plan 2016 Equity Incentive Plan [Member] 2016 Equity Incentive Plan [Member] Asset retirement obligations (a) Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Asset Retirement Obligations Line of Credit Facility [Table] Line of Credit Facility [Table] Repurchase amount Treasury Stock, Common, Value Estimated Net Quantities of Proved Oil and Natural Gas Reserves Reserve Quantities [Line Items] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Stock-based compensation expense Share-based Payment Arrangement, Expense Plains Marketing L.P. (Delhi field oil) Plains Marketing L P [Member] Represents Plains Marketing L.P., a major customer of the entity. Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Earnings (loss) per common share Earnings Per Share, Basic and Diluted [Abstract] Weighted Average Grant-Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Expected volatility, minimum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum Ownership percentage Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Document Fiscal Period Focus Document Fiscal Period Focus Income tax rate percentage Income tax provision (benefit) Effective Income Tax Rate Reconciliation, Percent Improved recovery, extensions and discoveries (in Bbls/Mcf) Proved Developed and Undeveloped Reserves, Recovery Extensions and Discoveries Changes in proved reserve estimates resulting from application of improved recovery, extensions and discovery techniques. Purchase price of oil and gas assets Payments to Acquire Oil and Gas Property and Equipment Cash, cash equivalents, and restricted cash, beginning of year Cash, cash equivalents, and restricted cash, end of year Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Schedule of Outstanding Derivative Positions Schedule of Derivative Instruments [Table Text Block] Net changes in timing of production and other Standardized Measure of Discounted Future Net Cash Flow of Proved Oil and Gas Reserves, Other Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Discount rate Measurement Input, Discount Rate [Member] Proved undeveloped reserves (in BOE) Proved Undeveloped Reserves (Energy) Schedule of customers from whom the entity derived 10 percent or more of net oil and natural gas revenues Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Risk-free interest rate, maximum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum State and federal taxes payable Taxes Payable, Current Current assets Assets, Current [Abstract] Net change due to purchase of minerals in place Increase Due to Purchases of Minerals in Place Leases [Abstract] Leases [Abstract] Entity Central Index Key Entity Central Index Key Income Taxes Income Tax, Policy [Policy Text Block] LIBOR London Interbank Offered Rate (LIBOR) [Member] Security Exchange Name Security Exchange Name Net change due to revisions in quantity estimates Revisions of Previous Quantity Estimates Changes in the standardized measure of discounted future net cash flows applicable to proved crude oil, natural gas liquids, and natural gas reserves Increase (Decrease) in Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Roll Forward] Asset Retirement Obligation Disclosure [Abstract] Asset Retirement Obligation Disclosure [Abstract] Vesting-date intrinsic value of Restricted Stock Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested Diluted (in shares) Weighted average number of common shares and dilutive potential common shares used in diluted EPS (in shares) Weighted Average Number of Shares Outstanding, Diluted Income Taxes Income Tax Disclosure [Text Block] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Current Fiscal Year End Date Current Fiscal Year End Date Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Schedule of outstanding potentially dilutive securities Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Employee Employee [Member] Employee Fair Value of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Other Nonoperating Income (Expense) [Abstract] Asset retirement obligations Long-term portion of asset retirement obligations Asset Retirement Obligations, Noncurrent Number of awards vesting (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number Class of Stock [Line Items] Class of Stock [Line Items] Name of Property [Axis] Name of Property [Axis] Credit Facility [Axis] Credit Facility [Axis] Net cash used by investing activities Net Cash Provided by (Used in) Investing Activities Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Proved property Costs Incurred, Acquisition of Oil and Gas Properties with Proved Reserves Prepaid Expenses and Other Current Assets Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] Cash Flows From Operating Activities Net Cash Provided by (Used in) Operating Activities [Abstract] Vested (in USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Principles of Consolidation and Reporting Consolidation, Policy [Policy Text Block] General and Administrative Expense General and Administrative Expense [Member] Expected life in years Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Prepaid subscription and licenses Prepaid Subscription And License, Current Prepaid Subscription And License, Current Natural gas Natural Gas [Member] Total current liabilities Liabilities, Current Class of Stock [Domain] Class of Stock [Domain] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Ownership [Domain] Ownership [Domain] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Schedule of standardized measure of discounted future net cash flows related to proved oil and natural gas reserves Standardized Measure of Discounted Future Cash Flows Relating to Proved Reserves Disclosure [Table Text Block] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Title of 12(b) Security Title of 12(b) Security Restricted Stock, Market Based Restricted Stock, Market Based [Member] Restricted Stock, Market Based [Member] Statement [Table] Statement [Table] Schedule of estimated quantities of proved oil and natural gas reserves and changes in quantities of proved developed and undeveloped reserves Schedule of Proved Developed and Undeveloped Oil and Gas Reserve Quantities [Table Text Block] Impairment of proved property Impairment of Oil and Gas Properties Recently Adopted and Issued Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Other deferred tax assets Deferred Tax Assets, Other Discount rate for present value (as a percent) Alternative Investment, Measurement Input Statistical Measurement [Axis] Statistical Measurement [Axis] Accounts Receivable and Allowance for Doubtful Accounts Accounts Receivable [Policy Text Block] Subsequent Event Subsequent Event [Member] Income tax provision (benefit) computed at the statutory federal rate: Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Cover [Abstract] Cover [Abstract] Preferred Stock Preferred Stock [Member] Schedule of other assets Schedule of Other Assets [Table Text Block] Initial borrowing base Line of Credit Facility, Initial Borrowing Base Line of Credit Facility, Initial Borrowing Base Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Total costs incurred for oil and natural gas activities Costs Incurred, Acquisition of Oil and Gas Properties Including Exploration and Development Cost Represents the cost incurred, including capitalized costs and costs charged to expense, in acquisition of oil and gas properties, exploration and development costs. Liabilities settled Asset Retirement Obligation, Liabilities Settled Name of Property [Domain] Name of Property [Domain] EOR credit benefit Effective Income Tax Rate Reconciliation, Tax Credit, Amount Adjustments to reconcile net income (loss) to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Forfeited (in USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested Options Forfeited, Weighted Average Grant Date Fair Value Improved recovery, extensions and discoveries (in BOE) Proved Developed and Undeveloped Reserves Energy Equivalents Improved Recovery Extensions Discoveries and Additions Additions to proved reserves, measured in energy equivalents, that result from (1) improved recovery (2) extension of the proved acreage of previously discovered (old) reservoirs through additional drilling in periods after discovery and (3) discovery of new fields with proved reserves or of new reservoirs of proved reserves in old fields. Deferred income taxes Total deferred income tax provision (benefit) Deferred Income Tax Expense (Benefit) Standardized measure of discounted future net cash flows Balance, beginning of the fiscal year Balance, end of the fiscal year Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves Supplemental Disclosures about Oil and Natural Gas Producing Properties (unaudited) Oil and Gas Exploration and Production Industries Disclosures [Text Block] Other Assets