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Summary of Significant Accounting Policies (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Concentration Risk, Percentage   10.00%
Revenue from Contract with Customer, Excluding Assessed Tax $ 288,631 $ 257,286
Property, Plant and Equipment [Abstract]    
Proved oil and gas properties 1,201,296 925,865
Unproved oil and gas properties 41,201 56,715
Furniture, fixtures, and other equipment 5,220 3,520
Less - Accumulated depreciation, depletion, and amortization (380,728) (284,804)
Property, Plant and Equipment, Net 866,989 701,296
Accounts Payable and Accrued Liabilities [Abstract]    
Trade accounts payable 26,121 32,683
Accrued operating expenses 3,873 3,549
Accrued payroll costs 4,601 4,785
Asset retirement obligation - current portion 392 302
Accrued taxes 1,413 3,583
Accrued Professional Fees, Current 109 534
Other payables 2,834 3,485
Total accounts payable and accrued liabilities $ 39,343 $ 48,921
Kinder Morgan Concentration Risk [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Concentration Risk, Percentage 31.00% 37.00%
Plains Marketing Concentration Risk [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Concentration Risk, Percentage 14.00%  
Twin Eagle Concentration Risk [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Concentration Risk, Percentage 13.00%  
Shell Trading Concentration Risk [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Concentration Risk, Percentage 11.00%  
Oil sales [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Revenue from Contract with Customer, Excluding Assessed Tax $ 92,833 $ 45,375
Natural gas sales [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Revenue from Contract with Customer, Excluding Assessed Tax 170,472 183,288
NGL sales [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Revenue from Contract with Customer, Excluding Assessed Tax 25,241 28,639
Other sales [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Revenue from Contract with Customer, Excluding Assessed Tax $ 86 $ (16)