Quarterly report pursuant to Section 13 or 15(d)

Supplemental Balance Sheet (Details)

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Supplemental Balance Sheet (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Prepaid and other current assets:    
Inventories 1 $ 4,036 $ 4,274
Prepaid expenses 2 15,511 14,771
Other Assets, Current 19,547 19,045
Other assets:    
Deferred issuance costs of the Revolver 2,542 2,349
Operating Lease, Right-of-Use Asset 2,237 2,432
Other 127 127
Other assets 4,906 4,908
Accounts payable and accrued liabilities:    
Trade accounts payable 29,137 7,055
Drilling and other lease operating costs 18,002 16,088
Royalties 34,223 26,615
Production, ad valorem and other taxes 5,242 3,094
Derivative Liability Settlements to Counterparties 8,773 321
Compensation 2,270 4,222
Interest 401 504
Operating Lease, Liability, Current 894 936
Other 1,008 4,254
Accounts payable and accrued liabilities 99,950 63,089
Other liabilities:    
Asset retirement obligations 5,648 5,461
Noncurrent operating lease obligations 1,553 1,752
Defined benefit pension obligations 845 865
Postretirement health care benefit obligations 291 284
Other Liabilities, Noncurrent 8,337 8,362
Tubular Inventory and Well Materials 3,300 3,900
Capitalized Costs - Crude Oil in Storage 700 400
Drilling and Completion Prepayment $ 13,900 13,600
Accrued Expenses - Juniper Transaction   $ 3,500