Debt Disclosure [Abstract] Schedule of Outstanding Debt Schedule of Debt [Table Text Block] Income Statement [Abstract] Statement [Table] Statement [Table] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Oil, natural gas and natural gas liquids sales Oil and Gas [Member] Electricity sales Electricity [Member] Oil Oil and Condensate [Member] Marketing revenues Advertising [Member] Other revenues Product and Service, Other [Member] Natural gas sales Natural Gas, Midstream [Member] Statement [Line Items] Statement [Line Items] Revenues and other: Revenues [Abstract] Revenues and other Revenue from Contract with Customer, Excluding Assessed Tax Gains (losses) on derivatives Gain (Loss) on Derivative Instruments, Net, Pretax Total revenues and other Revenues Expenses and other: Costs and Expenses [Abstract] Cost of goods sold Cost of Goods and Services Sold Transportation expenses Results of Operations, Transportation Costs Marketing expenses Marketing and Advertising Expense General and administrative expenses General and Administrative Expense Depreciation, depletion, and amortization Depreciation, Depletion and Amortization Impairment of oil and gas properties Impairment of Oil and Gas Properties Taxes, other than income taxes Taxes, Miscellaneous Losses (gains) on derivatives Other operating expenses Other Operating Income (Expense), Net Total expenses and other Costs and Expenses Other (expenses) income: Nonoperating Income (Expense) [Abstract] Interest expense Interest Expense Other, net Other Nonoperating Income (Expense) Total other (expenses) income Nonoperating Income (Expense) Reorganization items, net Reorganization Items Loss before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax expense (benefit) Income Tax Expense (Benefit) Net loss Net Income (Loss) Attributable to Parent Net loss per share: Earnings Per Share [Abstract] Basic (in dollars per share) Earnings Per Share, Basic Diluted (in dollars per share) Earnings Per Share, Diluted Organization, Consolidation and Presentation of Financial Statements [Abstract] Deferred financing costs, net of amortization Debt Issuance Costs, Noncurrent, Net Schedule of Error Corrections and Prior Period Adjustment Restatement [Table] Schedule of Error Corrections and Prior Period Adjustment Restatement [Table] Restatement [Axis] Restatement [Axis] Restatement [Domain] Restatement [Domain] Adjustment Restatement Adjustment [Member] Error Corrections and Prior Period Adjustments Restatement [Line Items] Error Corrections and Prior Period Adjustments Restatement [Line Items] Asset retirement obligation, noncurrent Asset Retirement Obligations, Noncurrent Asset retirement obligation, current Asset Retirement Obligation, Current Asset retirement obligation, accretion expense Asset Retirement Obligation, Accretion Expense Asset retirement obligation, liabilities settled Asset Retirement Obligation, Liabilities Settled Greenhouse gas liabilities, non-current Greenhouse Gas Liability Greenhouse Gas Liability Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative [Table] Derivative [Table] Scenario [Axis] Scenario [Axis] Scenario [Domain] Scenario [Domain] Forecast Forecast [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Fixed Price Oil Swaps (Brent) Brent Fixed Price Oil Swaps Contracts [Member] Brent Fixed Price Oil Swaps Contracts [Member] Fixed Price Oil Swaps (WTI) WTI Fixed Price Oil Swaps Contracts [Member] WTI Fixed Price Oil Swaps Contracts Purchased Oil Calls Options (Brent) Purchased Oil Call Options Contracts [Member] Purchased Oil Call Options Contracts [Member] Fixed Price Gas Purchase Swaps (Kern, Delivered) Kern, Delivered Fixed Price Gas Purchase Swaps Contracts [Member] Kern, Delivered Fixed Price Gas Purchase Swaps Contracts [Member] Fixed Price Gas Purchase Swaps (SoCal Citygate) SoCal Citygate Fixed Price Gas Purchase Swaps Contracts [Member] SoCal Citygate Fixed Price Gas Purchase Swaps Contracts [Member] Derivative [Line Items] Derivative [Line Items] Hedged volume (MBbls) Derivative, Nonmonetary Notional Amount, Volume Weighted-average price ($/Bbl) Derivative, Swap Type, Average Fixed Price Weighted-average price ($/Bbl) Derivative, Average Price Risk Option Strike Price Weighted-average price ($/MMBtu) Derivative, Swap Type, Average Variable Price Hedged volume (MMBtu) Derivative, Nonmonetary Notional Amount, Energy Measure Derivatives Derivative Instruments and Hedging Activities Disclosure [Text Block] Equity [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Stock Repurchase Program Stock Repurchase Program [Member] Stock Repurchase Program [Member] Stock Repurchase Program, Current Repurchases Authorized Stock Repurchase Program, Current Repurchases Authorized [Member] Stock Repurchase Program, Current Repurchases Authorized [Member] Statistical Measurement [Axis] Statistical Measurement [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Award Type [Axis] Award Type [Axis] Award Type [Domain] Award Type [Domain] Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Performance-based Restricted Stock Units (PSUs) Performance Shares [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Common stock, dividends paid (in dollars per share) Common Stock, Dividends, Per Share, Cash Paid Authorized amount of repurchases Stock Repurchase Program, Authorized Amount Authorized current repurchases Stock Repurchase Program, Authorized Amount During the Period Stock Repurchase Program, Authorized Amount During the Period Price of shares repurchased Treasury Stock, Value, Acquired, Cost Method Number of shares repurchased (in shares) Treasury Stock, Shares, Acquired Grants in period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Fair value of grants Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Grants In Period, Fair Value Share-based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other than Options, Grants In Period, Fair Value Vesting rights percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Extractive Industries [Abstract] Oil and Natural Gas Properties Oil and Gas Properties [Text Block] Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common stock Common Stock [Member] Additional Paid-in Capital Additional Paid-in Capital [Member] Treasury Stock Treasury Stock [Member] Retained Earnings (Deficit) Retained Earnings [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance Stockholders' Equity Attributable to Parent Shares withheld for payment of taxes on equity awards and other Share-based Payment Arrangement, Decrease for Tax Withholding Obligation Stock based compensation APIC, Share-based Payment Arrangement, Increase for Cost Recognition Purchases of treasury stock Purchase of rights to common stock Treasury Stock, Value, Purchase Of Rights To Common Stock Treasury stock purchase of unsecured creditors' rights to common stock Common stock issued to settle unsecured claims Stock Issued During Period, Value, Settlement Of Claims Stock Issued During Period, Value, Settlement Of Claims Dividends declared on common stock, $0.12/share Dividends, Common Stock Net loss Ending balance Weighted-average shares of common stock outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Incremental common shares attributable to dilutive effect of share-based payment arrangements (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Commitments and Contingencies Disclosure [Abstract] Commitments under contracts Unrecorded Unconditional Purchase Obligation Earnings Per Share Earnings Per Share [Text Block] Lawsuits, Claims, Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Commodity Contracts Commodity Contract [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Current assets Other Current Assets [Member] Non-current assets Other Noncurrent Assets [Member] Current liabilities Other Current Liabilities [Member] Non-current liabilities Other Noncurrent Liabilities [Member] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Assets: Derivative Asset [Abstract] Gross Amounts Recognized at Fair Value Derivative Asset, Fair Value, Gross Asset Gross Amounts Offset in the Balance Sheet Derivative Asset, Fair Value, Gross Liability Net Fair Value Presented on the Balance Sheet Derivative Asset Liabilities: Derivative Liability [Abstract] Gross Amounts Recognized at Fair Value Derivative Liability, Fair Value, Gross Liability Gross Amounts Offset in the Balance Sheet Derivative Liability, Fair Value, Gross Asset Net Fair Value Presented on the Balance Sheet Derivative Liability Total derivatives Derivative Assets (Liabilities), at Fair Value, Net Derivative Transactions Resulting in Crude Oil Production and Gas Purchases Hedges Schedule of Derivative Instruments [Table Text Block] Fair Values (Gross and Net) of Outstanding Derivatives Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Other Current Assets Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] Accounts Payable and Accrued Expenses Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Supplemental Disclosures to the Statements of Cash Flows Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Common stock, dividends declared (in dollars per share) Common Stock, Dividends, Per Share, Declared Purchase of rights to common stock Payments For Repurchase Of Common Stock, Subject To Claims Payments For Repurchase Of Common Stock, Subject To Claims Treasury stock reissued (in shares) Stock Issued During Period, Shares, Treasury Stock Reissued Statement of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net loss to net cash provided by (used in) operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation, depletion and amortization Amortization of debt issuance costs Amortization of Debt Issuance Costs Stock-based compensation expense Share-based Payment Arrangement, Noncash Expense Deferred income taxes Deferred Income Taxes and Tax Credits Increase in allowance for doubtful accounts Accounts Receivable, Credit Loss Expense (Reversal) Other operating expenses Other Noncash Income (Expense) Derivative activities: Adjustments, Noncash Items, Derivative Activities [Abstract] Adjustments, Noncash Items, Derivative Activities [Abstract] Total (gains) losses Cash settlements on derivatives Payments For (Proceeds From) Settlements On Derivatives Payments For (Proceeds From) Settlements On Derivatives Changes in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Decrease (increase) in accounts receivable Increase (Decrease) in Accounts Receivable Increase in other assets Increase (Decrease) in Other Operating Assets Decrease in accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Decrease in other liabilities Increase (Decrease) in Other Operating Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Capital expenditures: Payments For Capital Expenditures [Abstract] Payments For Capital Expenditures [Abstract] Development of oil and natural gas properties Payments to Explore and Develop Oil and Gas Properties Purchases of other property and equipment Payments to Acquire Other Property, Plant, and Equipment Changes in capital investment accruals Proceeds From (Payments For) Changes In Accrued Oil And Gas Properties Acquired Proceeds From (Payments For) Changes In Accrued Oil And Gas Properties Acquired Other Payments for (Proceeds from) Other Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Borrowings under RBL credit facility Proceeds from Long-term Lines of Credit Repayments on RBL credit facility Repayments of Long-term Lines of Credit Dividends paid on common stock Payments of Ordinary Dividends, Common Stock Purchase of treasury stock Payments For Repurchase Of Stock Held In Treasury Payments For Repurchase Of Stock Held In Treasury Shares withheld for payment of taxes on equity awards and other Payment, Tax Withholding, Share-based Payment Arrangement Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Net increase (decrease) in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash and cash equivalents: Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract] Beginning Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Ending Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Revenue from Contract with Customer [Abstract] Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Target period to cover operating expenses and fixed charges (up to) Derivative, Period Of Target Exposure Coverage Derivative, Period Of Target Exposure Coverage Target period for fixing the price natural gas purchases used in steam operations (up to) Derivatives, Fixing Price On Natural Gas Purchases Used For Steam Operations, Maximum Length Of Time Derivatives, Fixing Price On Natural Gas Purchases Used For Steam Operations, Maximum Length Of Time Notional amount, flow rate Derivative, fixed rate Derivative, Swap Type, Fixed Price Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Oil sales Oil [Member] Natural gas liquids sales Natural Gas Liquids [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Gains (losses) on oil derivatives Debt Debt Disclosure [Text Block] Document And Entity Information [Abstract] Document And Entity Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Current Reporting Status Entity Current Reporting Status Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Ex Transition Period Entity Ex Transition Period Entity Shell Company Entity Shell Company Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Supplemental Disclosures of Significant Non-Cash Investing Activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Material inventory transfers to oil and natural gas properties Noncash Transfer Of Inventory To Oil And Gas Property Noncash Transfer Of Inventory To Oil And Gas Property Supplemental Disclosures of Cash Payments (Receipts): Supplemental Cash Flow Information [Abstract] Interest, net of amounts capitalized Interest Paid, Excluding Capitalized Interest, Operating Activities Income taxes Income Taxes Paid Payment term (within) Revenue With Customers, Payment Term Revenue With Customers, Payment Term Number of cogeneration facilities selling majority of electric output not used in operations Number Of Cogeneration Facilities Selling Majority Of Electric Power Not Used In Operations Number Of Cogeneration Facilities Selling Majority Of Electric Power Not Used In Operations Number of utility companies under long term contract to buy electrical output Long-Term Contract For Selling Of Electric Power, Number Of Utility Companies Sold To Long-Term Contract For Selling Of Electric Power, Number Of Utility Companies Sold To Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Revolving Credit Facility Revolving Credit Facility [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] RBL Facility RBL Facility [Member] RBL Facility [Member] 2026 Notes Unsecured Notes Due 2026 [Member] Unsecured Notes Due 2026 [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Line of credit Line of Credit [Member] Unsecured Debt Unsecured Debt [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Long-Term Debt - Principal Amount Long-term Debt, Gross Less: Debt Issuance Costs Debt Issuance Costs, Net Long-Term Debt, net Long-term Debt Variable rate Line of Credit Facility, Interest Rate at Period End Security Debt Instrument, Collateral, Percentage Of Value Of Proven Oil And Gas Reserves And Lien On Other Assets Debt Instrument, Collateral, Percentage Of Value Of Proven Oil And Gas Reserves And Lien On Other Assets Interest Rate Debt Instrument, Interest Rate, Stated Percentage Equity Shareholders' Equity and Share-based Payments [Text Block] Statement of Financial Position [Abstract] ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Accounts receivable, net of allowance for doubtful accounts of $2,303 at March 31, 2020 and $1,103 at December 31, 2019 Accounts Receivable, after Allowance for Credit Loss, Current Derivative instruments Derivative Asset, Current Other current assets Prepaid Expense and Other Assets, Current Total current assets Assets, Current Noncurrent assets: Assets, Noncurrent [Abstract] Oil and natural gas properties Oil and Gas Property, Successful Effort Method, Gross Accumulated depletion and amortization Oil and Gas Property, Successful Effort Method, Accumulated Depreciation, Depletion Amortization and Impairment Total oil and natural gas properties, net Oil and Gas Property, Successful Effort Method, Net Other property and equipment Property, Plant and Equipment, Gross Accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Total other property and equipment, net Property, Plant and Equipment, Net Derivative instruments Derivative Asset, Noncurrent Other noncurrent assets Other Assets, Noncurrent Total assets Assets LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable and accrued expenses Accounts Payable and Accrued Liabilities, Current Derivative instruments Derivative Instruments and Hedges, Liabilities Total current liabilities Liabilities, Current Noncurrent liabilities: Liabilities, Noncurrent [Abstract] Long-term debt Long-term Debt, Excluding Current Maturities Derivative instruments Derivative Instruments and Hedges, Liabilities, Noncurrent Deferred income taxes Deferred Income Tax Liabilities, Net Asset retirement obligation Other noncurrent liabilities Other Liabilities, Noncurrent Commitments and Contingencies - Note 4 Commitments and Contingencies Equity: Stockholders' Equity Attributable to Parent [Abstract] Common stock ($.001 par value; 750,000,000 shares authorized; 84,863,263 and 84,655,222 shares issued; and 79,751,017 and 79,542,976 shares outstanding, at March 31, 2020 and December 31, 2019, respectively) Common Stock, Value, Issued Additional paid-in-capital Additional Paid in Capital Treasury stock, at cost, (5,112,246 shares at March 31, 2020 and at December 31, 2019) Treasury Stock, Value Retained earnings (deficit) Retained Earnings (Accumulated Deficit) Total equity Total liabilities and equity Liabilities and Equity Schedule of Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Principles of Consolidation and Reporting Consolidation, Policy [Policy Text Block] Reclassification Reclassification, Policy [Policy Text Block] New Accounting Standards Issued, But Not Yet Adopted New Accounting Pronouncements, Policy [Policy Text Block] Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Prepaid expenses Prepaid Expense, Current Materials and supplies Energy Related Inventory, Materials And Supplies Energy Related Inventory, Materials And Supplies Oil inventories Energy Related Inventory, Crude Oil and Natural Gas Liquids Other Other Assets, Current Total other current assets Basic EPS calculation Earnings Per Share, Basic [Abstract] Net loss Basic loss per share (in dollars per share) Diluted EPS calculation Earnings Per Share, Diluted [Abstract] Weighted-average shares of common stock outstanding (in shares) Dilutive effect of potentially dilutive securities (in shares) Weighted Average Number Diluted Shares Outstanding Adjustment Weighted-average common shares outstanding - diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Diluted loss per share (in dollars per share) Potentially dilutive securities (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Supplemental Disclosures to the Financial Statements Additional Financial Information Disclosure [Text Block] Allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss, Current Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares issued (in shares) Common Stock, Shares, Issued Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Treasury stock, at cost (in shares) Treasury Stock, Common, Shares Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Interest Expense Interest Expense [Member] Letter of credit Letter of Credit [Member] Debt issuance costs for the RBL Facility Debt Issuance Costs, Line of Credit Arrangements, Net Debt issuance costs for the 2026 Senior Unsecured Notes Fair value of debt Long-term Debt, Fair Value Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Borrowing base Line of Credit Facility, Current Borrowing Capacity Elected commitment feature to increase borrowing base Line Of Credit Facility, Borrowing Capacity, Increase, New Maximum Eligible To Be Elected Line Of Credit Facility, Borrowing Capacity, Increase, New Maximum Eligible To Be Elected Borrowings outstanding Long-term Line of Credit Letters of credit outstanding Letters of Credit Outstanding, Amount Available borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Leverage ratio (no more than) Debt Instrument, Covenant, Maximum Leverage Ratio Debt Instrument, Covenant, Maximum Leverage Ratio Current ratio (at least) Debt Instrument, Covenant, Minimum Current Ratio Debt Instrument, Covenant, Minimum Current Ratio Leverage ratio at period end Ratio of Indebtedness to Net Capital Current ratio at period end Ratio Of Current Assets To Current Liabilities Ratio Of Current Assets To Current Liabilities Reduction in borrowing base if unsecured indebtedness is incurred Debt Instrument, Covenant, Reduction In Borrowing Base If Unsecured Debt Is Incurred, Percentage Debt Instrument, Covenant, Reduction In Borrowing Base If Unsecured Debt Is Incurred, Percentage Bond repurchase program, authorized amount Bond Repurchase Program, Authorized Amount Bond Repurchase Program, Authorized Amount Minimum availability of borrowing base required which will permit distributions to parent company Debt Instrument, Covenant, Distributions To Parent Company, Minimum Remaining Borrowing Capacity Required, Percentage Debt Instrument, Covenant, Distributions To Parent Company, Minimum Remaining Borrowing Capacity Required, Percentage Maximum pro forma leverage ratio allowable which will permit distributions to parent company Debt Instrument, Covenant, Distributions To Parent Company, Maximum Pro Forma Leverage Ratio Allowable Debt Instrument, Covenant, Distributions To Parent Company, Maximum Pro Forma Leverage Ratio Allowable Revenue Recognition Revenue from Contract with Customer [Text Block] Accounts payable-trade Accounts Payable, Trade, Current Accrued expenses Accrued Liabilities, Current Royalties payable Accrued Royalties, Current Taxes other than income tax liability Accrual for Taxes Other than Income Taxes, Current Accrued interest Interest Payable, Current Dividends payable Dividends Payable Asset retirement obligation - current portion Other Accounts Payable, Other, Current Total accounts payable and accrued expenses Recognition of valuation allowance Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Effective income tax rate Effective Income Tax Rate Reconciliation, Percent