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ADDITIONAL FINANCIAL STATEMENT INFORMATION (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Accounts receivable:    
Oil, natural gas and natural gas liquids revenues $ 32,787 $ 22,781
Joint interest accounts 6,508 8,543
Other 239 918
Total 39,534 32,242
Prepaids and other:    
Prepaids 743 892
Funds in escrow 1,740 1,740
Other 108 108
Total 2,591 2,740
Other assets:    
Oil, natural gas and natural gas liquids revenues 1,335 1,720
Funds in escrow 581 581
Other 51 50
Total other assets 1,967 2,351
Accounts payable and accrued liabilities:    
Trade payables 27,922 22,740
Accrued oil and natural gas capital costs 16,810 8,344
Revenues and royalties payable 21,049 16,412
Accrued interest expense 1,219 482
Accrued employee compensation 967 3,223
Accrued lease operating expenses 6,002 7,622
Other 104 105
Total 74,073 58,928
Other noncurrent assets:    
Other $ 51 $ 50