Quarterly report pursuant to Section 13 or 15(d)

Organization and Accounting Policies (Assets and Liabilities Measured on Recurring Basis) (Details)

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Organization and Accounting Policies (Assets and Liabilities Measured on Recurring Basis) (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
SARs liability $ 1,422 $ 609
Derivative liability - crude oil swaps 24,064 4,806
Liabilities 25,486 5,415
Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
SARs liability 1,422 609
Derivative liability - crude oil swaps 24,064 4,806
Liabilities $ 25,486 $ 5,415