Entity Units Outstanding Amendment Flag Amendment Flag Current Fiscal Year End Date Current Fiscal Year End Date Document And Entity Information Abstract Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Document Period End Date Document Period End Date Document Type Document Type Entity Central Index Key Entity Central Index Key Entity Common Stock, Shares Outstanding Entity Current Reporting Status Entity Current Reporting Status Entity Filer Category Entity Filer Category Entity Public Float Entity Public Float Entity Registrant Name Entity Registrant Name Entity Voluntary Filers Entity Voluntary Filers Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Well costs payable Carrying amount of drilling and completion expenditures made, not otherwise specified in the taxonomy, capitalized as oil and gas properties, yet unpaid as of the balance sheet date and payable within one year or the normal operating cycle, if longer. Unevaluated oil and gas properties Evaluated oil and gas properties, net Evaluated oil and gas properties, net. Accounts Payable, Current Trade accounts payable Accounts Payable Well Costs Current Accounts Receivable, Net, Current Oil and gas sales Accounts Receivable, Net, Current [Abstract] Accounts receivable: Accrued Income Taxes, Current Production taxes payable Additional Paid in Capital Additional paid-in capital Asset Retirement Obligations, Noncurrent Asset retirement obligations Assets Total assets Assets [Abstract] ASSETS Assets, Current Total current assets Assets, Current [Abstract] Current assets: Capitalized Costs of Unproved Properties Excluded from Amortization, Cumulative Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Commitments and Contingencies Commitments and contingencies (See Note 10) Common Stock, Value, Issued Common stock - $0.001 par value, 100,000,000 shares authorized: 51,740,310 and 51,409,340 shares issued and outstanding, respectively Deferred Finance Costs, Noncurrent, Net Debt issuance costs, net of amortization Deferred Tax Assets, Net of Valuation Allowance, Noncurrent Deferred tax asset, net Deferred Tax Liabilities, Net, Noncurrent Deferred tax liability, net Evaluated Oil And Gas Properties Net Inventory, Net Inventory Liabilities Total liabilities Liabilities and Equity Total liabilities and shareholders' equity Liabilities and Equity [Abstract] LIABILITIES AND SHAREHOLDERS' EQUITY Liabilities, Current Total current liabilities Liabilities, Current [Abstract] Current liabilities: Long-term Line of Credit, Noncurrent Revolving credit facility Oil and Gas Joint Interest Billing Receivables, Current Joint interest billing Other Accrued Liabilities, Current Other accrued expenses Other Assets, Current Other current assets Other Assets, Noncurrent Other assets Other Liabilities, Current Revenue payable Preferred Stock, Value, Issued Preferred stock - $0.01 par value, 10,000,000 shares authorized: no shares issued and outstanding Property, Plant and Equipment, Net Property and equipment, net Property, Plant and Equipment, Net [Abstract] Property, Plant and Equipment, Other, Net Other property and equipment, net Retained Earnings (Accumulated Deficit) Accumulated deficit BALANCE SHEETS [Abstract] Stockholders' Equity Attributable to Parent Total shareholders' equity Stockholders' Equity Attributable to Parent [Abstract] Shareholders' equity: Property and equipment: Common Stock, Par or Stated Value Per Share Common stock, par value per share Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Outstanding Common stock, shares outstanding Preferred Stock, Par or Stated Value Per Share Preferred stock, par value per share Preferred Stock, Shares Authorized Preferred stock, shares authorized Preferred Stock, Shares Issued Preferred stock, shares issued Preferred Stock, Shares Outstanding Preferred stock, shares outstanding Earnings Per Share, Basic Basic Earnings Per Share, Basic and Diluted [Abstract] Net income per common share: Earnings Per Share, Diluted Diluted General and Administrative Expense General and administrative Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Income before income taxes STATEMENTS OF OPERATIONS [Abstract] Income Tax Expense (Benefit) Deferred income tax provision Investment Income, Interest Interest Income Oil and Gas Property, Lease Operating Expense Lease operating expenses Net income Nonoperating Income (Expense) [Abstract] Other income Oil and Gas Revenue Oil and gas revenues Operating Expenses Total expenses Operating Expenses [Abstract] Expenses: Operating Income (Loss) Operating income Production Tax Expense Production taxes Diluted Basic Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Weighted average shares outstanding: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities Total Adjustments Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Cash and Cash Equivalents, Period Increase (Decrease) Net decrease in cash and cash equivalents Deferred Income Taxes and Tax Credits Provision for deferred taxes Increase (Decrease) in Accounts Payable Trade Increase (Decrease) in Accounts Payable and Accrued Liabilities [Abstract] Accounts payable Increase (Decrease) in Accounts Receivable Oil and gas sales Increase (Decrease) in Accrued Liabilities Accrued expenses Increase (Decrease) in Accrued Taxes Payable Production taxes Increase (Decrease) in Inventories Inventory Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Other Accrued Liabilities Revenue Increase (Decrease) in Other Operating Assets and Liabilities, Net Other Increase (Decrease) in Other Receivables Joint interest billing Increase (Decrease) in Receivables [Abstract] Accounts receivable Net Cash Provided by (Used in) Financing Activities Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Cash flows from financing activities: Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash flows from investing activities: Net Cash Provided by (Used in) Operating Activities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Cash flows from operating activities: Net Income (Loss) Attributable to Parent Net income Payments to Acquire Property, Plant, and Equipment Acquisition of property and equipment Proceeds from Issuance of Warrants Proceeds from exercise of warrants Proceeds from Lines of Credit Proceeds from revolving credit facility Repayments of Related Party Debt Payment of related party note payable Depreciation, depletion, and amortization Share-based Compensation Stock-based compensation STATEMENTS OF CASH FLOWS [Abstract] Organization and Summary of Significant Accounting Policies [Abstract] Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Organization and Summary of Significant Accounting Policies Property and Equipment [Abstract] Property, Plant and Equipment Disclosure [Text Block] Property and Equipment Interest Expense [Abstract] Interest And Debt Expense Disclosure [Text Block] Interest And Debt Expense Disclosure [Text Block]. Interest Expense Depletion Depreciation And Amortization Disclosure Text Block Depletion, depreciation and amortization Depletion Depreciation And Amortization Disclosure [Text Block] Depletion, depreciation and amortization [Abstract] Debt Disclosure [Text Block] Revolving Credit Facility Asset Retirement Obligations [Abstract] Asset Retirement Obligation Disclosure [Text Block] Asset Retirement Obligations Related Party Transactions [Abstract] Related Party Transactions Disclosure [Text Block] Related Party Transactions Shareholders' Equity [Abstract] Stockholders' Equity Note Disclosure [Text Block] Shareholders' Equity Stock-Based Compensation [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Stock-Based Compensation Commitments and Contingencies [Abstract] Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies Cash Flow, Supplemental Disclosures [Text Block] Supplemental Schedule of Information to the Statements of Cash Flows Supplemental Schedule of Information to the Statements of Cash Flows [Abstract] Subsequent Events [Abstract] Subsequent Events [Text Block] Subsequent Events Well Costs Payable Disclosure of accounting policy for accrued well costs. Interim Financial Information Disclosure of accounting policy for interim financial information. Accrued Well Costs Policy Text Block Asset Retirement Obligations, Policy [Policy Text Block] Asset Retirement Obligations Basis of Accounting, Policy [Policy Text Block] Basis of Presentation Capitalization of Internal Costs, Policy [Policy Text Block] Capitalized Overhead Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash Equivalents Concentration Risk, Credit Risk, Policy [Policy Text Block] Major Customers and Operating Region Earnings Per Share, Policy [Policy Text Block] Earnings Per Share Amounts Fair Value of Financial Instruments, Policy [Policy Text Block] Financial Instruments and Hedging Activities Full Cost or Successful Efforts, Policy [Policy Text Block] Oil and Gas Properties Income Tax, Policy [Policy Text Block] Income Taxes Industry Specific Policies, Oil and Gas [Policy Text Block] Oil and Gas Reserves Interim Financial Information [Policy Text Block] Inventory, Policy [Policy Text Block] Inventory New Accounting Pronouncements, Policy [Policy Text Block] Recently Issued Accounting Standards Oil And Gas Sales [Policy Text Block] Reclassification, Policy [Policy Text Block] Reclassifications Property, Plant and Equipment, Policy [Policy Text Block] Other Property and Equipment Revenue Recognition, Policy [Policy Text Block] Revenue Recognition Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Stock-Based Compensation Use of Estimates, Policy [Policy Text Block] Use of Estimates Oil and Gas Sales Disclosure of accounting policy for oil and gas sales. Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share Schedule Of Capitalized Overhead Expenses Table Text Block Schedule of Weighted Average Number of Shares [Table Text Block] Reconciliation of Weighted-average Shares Outstanding Basic and Diluted Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Schedule of Customers With Balances Greater Than 10% of Total Receivables Schedules Of Percentage Of Oil And Gas Revenues By Major Customer Table Text Block Schedule of Capitalized Overhead Expenses Tabular disclosure of capitalized overhead expenses. Schedule of Percentages of Oil and Gas Revenue Purchased By Major Customers Tabular disclosure of the percentages of oil and gas revenues purchased by major customers. Property, Plant and Equipment [Table Text Block] Schedule of Capitalized Costs of Property and Equipment Schedule of the Components of Interest Expense Tabular disclosure of the components of interest expense. Components Of Interest Expense Table Text Block Schedule of Depletion, Depreciation and Amortization Tabular disclosure of depreciation, depletion and amortization expenses incurred. Depletion Depreciation And Amortization Table Text Block Schedule of Line of Credit Facilities [Table Text Block] Schedule of Terms of Line of Credit Schedule of Change in Asset Retirement Obligation [Table Text Block] Schedule of Changes in Asset Retirement Obligations Schedule of Noncash or Part Noncash Acquisitions [Table Text Block] Schedule of Common Stock Issued For Acquisition of Mineral Interests and Services Schedule Of Outstanding Warrant Activity Table Text Block Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block] Schedule of Issued and Outstanding Common Stock Warrants Schedule of Stockholders Equity [Table Text Block] Schedule of Classes of Stock Schedule of Outstanding Common Stock Warrant Activity Tabular disclosure of outstanding common stock warrant activity. Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Schedule of Stock-based Compensation Expenses Recognized Schedule Of Estimated Unrecognized Compensation Cost From Unvested Stock Options Table Text Block Schedule of Share-based Compensation, Activity [Table Text Block] Schedule of Issued and Outstanding Stock Options Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Summary of Stock Option Activity Under Stock Option and Incentive Plans Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of Assumptions Used In Valuing Stock Options Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block] Schedule of Employee Stock Options Granted During the Period Schedule of Estimated Unrecognized Compensation Cost From Unvested Stock Options Tabular disclosure of the estimated unrecognized compensation cost from unvested stock options. Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Schedule of Supplemental Information to the Statements of Cash Flows Capitalized overhead Portion of company's overhead expenses directly attributable to acquisition and development activities that are capitalized under the full cost method of accounting. Accounts Receivable [Member] Tenant accounts receivable [Member] Capitalized Overhead Expenses Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Axis] Concentration Risk Type [Axis] Concentration Risk [Line Items] Concentration Risk, Percentage Risk percentage Concentration Risk [Table] Concentration Risk Type [Domain] Major Customer One Concentration Risk [Member] Major Customer Three Concentration Risk [Member] Major Customer Two Concentration Risk [Member] Sales Revenue, Goods, Net [Member] Oil and Gas Revenues [Member] Company A [Member] Major Customer One Concentration Risk [Member] Company C [Member] Major Customer Three Concentration Risk [Member] Company B [Member] Major Customer Two Concentration Risk [Member] Convertible promissory notes and related accrued interest Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Potentially dilutive common shares having anti-dilutive effect on earnings per share Antidilutive Securities [Axis] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities, Name [Domain] Contingently Issuable Shares [Member] Incremental Common Shares Attributable to Call Options and Warrants Warrants Incremental Common Shares Attributable to Share-based Payment Arrangements Stock options Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Stock Options [Member] Warrant [Member] Weighted Average Number Diluted Shares Outstanding Adjustment [Abstract] Potentially dilutive common shares from: Weighted Average Number of Shares Outstanding, Diluted Weighted-average shares outstanding - diluted Weighted Average Number of Shares Outstanding, Basic Weighted-average shares outstanding - basic Producing and non-producing Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Less, accumulated depreciation Oil and Gas Property or Project [Axis] Unevaluated costs, not subject to amortization Capitalized Costs of Unproved Properties Excluded from Amortization, Cumulative [Abstract] Unevaluated costs, not subject to amortization: Capitalized Costs, Proved Properties Land [Member] Leasehold Improvements [Member] Office Equipment [Member] Oil and Gas Property [Abstract] Evaluated costs: Oil and Gas Property, Full Cost Method, Depletion Less, accumulated depletion Oil and Gas Property, Full Cost Method, Gross Total capitalized costs Oil and Gas Property, Full Cost Method, Net Oil and gas properties, net Oil and Gas Property, Full Cost Method, Net [Abstract] Oil and gas properties, full cost method: Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment [Line Items] Other property and equipment: Property, Plant and Equipment, Other, Gross Other property and equipment, gross Property, Plant and Equipment, Type [Domain] Schedule of Property, Plant and Equipment [Table] Support Equipment and Facilities [Member] Uncompleted Wells Equipment and Facilities [Member] Unproved Oil and Gas Property or Major Project [Domain] Vehicles [Member] Lease acquisition and other costs [Member] Wells in progress [Member] Amortization of debt issuance costs Amortization of debt issuance costs. Amortization Of Debt Issuance Costs Capitalized Interest Costs, Including Allowance for Funds Used During Construction Less, interest capitalized Interest Expense Interest expense, net Interest Expense, Other Revolving bank credit facility at a variable rate Interest Expense, Related Party Related party note payable at 5.25% Depletion expense per BOE Amortization Expense Per Physical Unit of Production Depletion Depreciation Results of Operations, Accretion of Asset Retirement Obligations Results of Operations, Depreciation, Depletion, Amortization and Accretion Total DDA expense Amortization Available borrowing capacity Debt Instrument, Basis Spread on Variable Rate Revolving credit facility, additional rate over LIBOR Revolving Credit Facility [Abstract] Line of Credit Facility, Current Borrowing Capacity Line of Credit Facility, Expiration Date Credit facility, expiration date Line of Credit Facility, Interest Rate at Period End Period end prime rate Line of Credit Facility, Interest Rate Description Credit facility interest rate Line of Credit Facility, Interest Rate During Period Minimum annual interest rate Line of Credit Facility, Maximum Borrowing Capacity Total borrowing commitment Line of Credit Facility, Remaining Borrowing Capacity Maximum Hedge Percentage Of Scheduled Production Requirement Per Revolving Credit Facility Covenants Minimum Hedge Percentage Of Scheduled Production Requirement Per Revolving Credit Facility Covenants Current limited borrowing capacity on revolving credit facility Maximum hedge percentage of scheduled production for a rolling 24 months, as required by revolving credit facility covenants Maximum hedge percentage of scheduled production for a rolling 24 months, as required by revolving credit facility covenants. Minimum hedge percentage of scheduled production for a rolling 24 months, as required by revolving credit facility covenants Minimum hedge percentage of scheduled production for a rolling 24 months, as required by revolving credit facility covenants. Liabilities incurred Liabilities settled Revisions in estimated liabilities Estimated asset life (in years) The estimated asset life used in determining the fair value of asset retirement obligation Estimated asset life (in years), maximum The maximum estimated asset life used in determining the fair value of asset retirement obligation. Estimated asset life (in years), minimum The minimum estimated asset life used in determining the fair value of asset retirement obligation. Inflation rate The inflation rate used in determining the fair value of asset retirement obligation. Inflation rate, maximum The maximum inflation rate used in determining the fair value of asset retirement obligation. Inflation rate, minimum The minimum inflation rate used in determining the fair value of asset retirement obligation. Credit adjusted risk free interest rate, maximum The maximum risk free interest rate used in determining the fair value of asset retirement obligation. Credit adjusted risk free interest rate, minimum The minimum risk free interest rate used in determining the fair value of asset retirement obligation. Asset Retirement Obligation Asset retirement obligations, beginning Asset retirement obligations, ending Asset Retirement Obligation, Accretion Expense Accretion Asset Retirement Obligation, Liabilities Incurred Asset Retirement Obligation, Liabilities Settled Asset Retirement Obligation, Revision of Estimate Fair Value Assumptions Estimated Asset Life Fair Value Assumptions Estimated Asset Life Maximum Fair Value Assumptions Estimated Asset Life Minimum Fair Value Assumptions Inflation Rate Fair Value Assumptions Inflation Rate Maximum Fair Value Assumptions Inflation Rate Minimum Fair Value Assumptions Risk Free Interest Rate Maximum Fair Value Assumptions Risk Free Interest Rate Minimum Asset retirement costs and obligations Noncash investing and financing transactions, asset retirement costs and obligations. Placement agent commission in the form of warrants Noncash investing and financing transactions, placement agent commission in the form of warrants. Reclass derivative liability to equity Noncash investing and financing transactions, reclass derivative liability to equity. Capital Expenditures Incurred but Not yet Paid Well costs payable Cash Flow Noncash Investing And Financing Activities Asset Retirment Costs And Obligations Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Non-cash investing and financing activities: Cash Flow Noncash Investing And Financing Activities Placement Agent Commission In Form Of Warrants Cash Flow Noncash Investing And Financing Activities Reclass Derivative Liability To Equity Debt Conversion, Converted Instrument, Amount Conversion of promissory notes into common stock Income Taxes Paid Income taxes paid Interest Paid Interest paid Noncash or Part Noncash Acquisition, Net Nonmonetary Assets Acquired (Liabilities Assumed) Assets acquired in exchange for note payable Noncash or Part Noncash Acquisition, Noncash Financial or Equity Instrument Consideration, Shares Issued Assets acquired in exchange for common stock Supplemental Cash Flow Elements [Abstract] Supplemental cash flow information: Administrative outsourcing expenses Administrative outsourcing expenses. Purchase of equipment from related party Advanced purchases from related party for services and oil and gas equipment. Amounts collected from related party Amounts collected from related party. Balance due to related party Balance owed to related party for services and oil and gas equipment. HS Land & Cattle, LLC [Member] HS Land & Cattle, LLC [Member] Joint interest balance due to related party Joint interest balance due to related party. Administrative Outsourcing Expense Advances From Related Party For Services And Oil And Gas Equipment Amounts Collected From Related Party Balance Owed To Related Party For Services And Oil And Gas Equipment Hs Land And Cattle Limited Liability Company [Member] Joint Interest Balance Due To Related Party Operating Leases, Rent Expense Rent expense Monthly Rent Expense Charged By Related Party Notes Payable, Related Parties, Current Notes payable, related party Related Party [Domain] Related Party Transaction [Line Items] Related Party [Axis] Repayment Of Advances From Related Party For Services And Oil And Gas Equipment Schedule of Related Party Transactions, by Related Party [Table] Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Restricted shares of common stock Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Value of restricted shares of common stock Monthly rent expense charged by related party Monthly rent expense charged by related party. Payments to related party Repayment of advances from related party for services and oil and gas equipment. Common stock, par value Net Proceeds From Stock Issued For Purchase Of Assets Preferred stock, par value Shares Issued For Purchase Of Assets Price Per Share Stockholders' Equity, Number of Shares, Par Value and Other Disclosures [Abstract] Stock Issued During Period Purchase Of Assets [Abstract] Stock Issued During Period, Shares, Purchase of Assets Number of common shares issued for assets Aggregate value of shares issued Net proceeds from stock issued for purchase of assets. Average price per common share Price per share for shares issued for purchase of assets. Classes of stock Common stock issued for acquisition of mineral interests and services Stock Issued During Period Purchase Of Assets [Abstract] Remaining Contractual Life The remaining contractual term (in years) for warrants. Exercise Price times Number of Shares Value of warrants, expressed as number of warrants issuable multiplied by the exercise price. Investor Relation Warrants [Member] Class of Warrant or Right [Axis] Class of Warrant or Right [Domain] Class of Warrant or Right, Exercise Price of Warrants or Rights Exercise Price Class of Warrant or Right [Line Items] Class of Warrant or Right, Number of Securities Called by Warrants or Rights Number of Shares Class of Warrant or Right [Table] Class Of Warrant Remaining Contractual Term Class Of Warrant Value Investor Relation Warrants [Member] Series Awarrants [Member] Series B Warrants [Member] Series C Warrants [Member] Series D Warrants [Member] Warrants And Rights Exercised Warrants And Rights Exercised Weighted Average Exercise Price Warrants And Rights Granted Warrants And Rights Granted Weighted Average Exercise Price Warrants and Rights Outstanding Warrants And Rights Outstanding Exercised On Cashless Basis Warrants And Rights Outstanding Exercised On Cashless Basis Weighted Average Exercise Price Warrants And Rights Outstanding Weighted Average Exercise Price Series A [Member] Series A Warrants [Member] Series B [Member] Series B Warrants [Member] Series C [Member] Series C Warrants [Member] Series D [Member] Series D Warrants [Member] Exercised Warrants and rights exercised during period. Weighted average exercise price, exercised Warrants and rights exercised, weighted average exercise price. Granted Warrants and rights granted during period. Weighted average exercise price, granted Warrants and rights granted, weighted average exercise price. Outstanding Outstanding Number of warrants exercised on a cashless basis Number of warrants exercised on a cashless basis. Weighted average exercise price of warrants issued on a cashless basis The weighted average exercise price of warrants issued on a cashless basis. Weighted average exercise price Warrants and rights outstanding, weighted average exercise price. Weighted average exercise price Allocated Share-based Compensation Expense Stock-based compensation expense Award Type [Axis] Award Type [Axis] Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized Unrecognized compensation expense Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition Remaining vesting phase Restricted Stock [Member] Restricted stock grants [Member] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Vesting Period Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] Assumptions used in valuing stock options: Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Expected dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Expected term Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum Volatility, maximum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum Volatility, minimum Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Forfeiture Rate Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Forfeiture Rate Maximum Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Forfeiture Rate Minimum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Risk free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum Risk free interest rate, maximum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Risk free interest rate, minimum Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Number of shares authorized for issuance under each plan Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Granted Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Outstanding Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Summary of activity for stock options: Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Outstanding, weighted average exercise price Outstanding, weighted average exercise price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Weighted average remaining contractual life Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract] Vested Options: Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Number of shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Weighted average exercise price Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Weighted average remaining contractual life Share-based Compensation Arrangement by Share-based Payment Award, Terms of Award Term (in years) Award Type [Domain] Award Type [Domain] Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Exercised, weighted average exercise price Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Forfeited, weighted average exercise price Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Granted, weighted average exercise price Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Exercised Stock options [Member] Forfeiture rate The fortfeiture rate used in valuing stock options. Fortfeiture rate, maximum The maximum fortfeiture rate used in valuing stock options. Forfeiture rate, minimum The minimum fortfeiture rate used in valuing stock options. Fair value The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Investor relations warrants [Member] Other Commitment Pro-rata share of the aggregate cost of drilling and completing new wells Working Interest In Potential New Wells Under Commitment Working interest in potential new wells under commitment Working interest in potential new wells under commitment. Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Business Acquisition [Axis] Business Acquisition, Cost of Acquired Entity, Cash Paid Cash paid for entity acquired Business Acquisition, Cost of Acquired Entity, Purchase Price Purchase price of entity acquired Business Acquisition, Equity Interest Issued or Issuable, Value Assigned Value of shares issued in acquisition Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Shares issued in acquisition Monthly Number Of Barrels Of Oil Covered Under Commodity Swap Year One Monthly Number Of Barrels Of Oil Covered Under Commodity Swap Year Two Number Of Gross Acres Covered By Leases Per Agreement To Acquire Oil And Gas Properties Number Of Net Acres Covered By Leases Per Agreement To Acquire Oil And Gas Properties Number Of Producing Oil And Gas Wells Per Agreement To Acquire Oil And Gas Properties Price Per Barrel To Be Paid Per Commodity Swap Year One Price Per Barrel To Be Paid Per Commodity Swap Year Two Subsequent Event Amendment To Line Of Credit Agreement [Member] Subsequent Event Business Acquisition Acquired [Member] Subsequent Event [Line Items] Subsequent Event [Table] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Total Barrels Of Future Oil Production Included In Commodity Swap Monthly number of barrels of oil covered under commodity swap in 2013 Monthly number of barrels of oil covered under the commodity swap in year one. Monthly number of barrels of oil covered under commodity swap in 2014 Monthly number of barrels of oil covered under the commodity swap in year two. Number of gross acres acquired in acquisition Number of gross acres acquired in acquisition. Number of net acres acquired in acquisition Number of net acres acquired in acquisition. Number of producing oil and gas wells per agreement to acquire oil and gas properties Number of producing oil and gas wells per agreement to acquire oil and gas properties. Price per barrel to be paid per commodity swap in 2013 Price per barrel to be paid per commodity swap in year one. Price per barrel to be paid per commodity swap in 2014 Price per barrel to be paid per commodity swap in year two. Amendment to Line of Credit [Member] Subsequent Event Amendment To Line Of Credit Agreement [Member] Agreement to Acquire Oil and Gas Properties [Member] Subsequent Event Business Acquisition Acquired [Member] The total number of barrels of future oil production included in commodity swap The total number of barrels of future oil production included in commodity swap.