Supplemental Balance Sheet Detail (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Prepaid and other current assets:
Inventories	$ 13,025	$ 10,305
Prepaid expenses	2,964	10,693
Prepaid and other current assets	15,989	20,998
Other assets:
Deferred issuance costs of the Credit Facility, net of amortization	3,138	3,308
Right-of-use assets – operating leases	1,498	1,671
Other	0	38
Other assets	4,636	5,017
Accounts payable and accrued liabilities:
Trade accounts payable	32,463	32,452
Drilling and other lease operating costs	47,103	35,045
Revenue and royalties payable	110,493	95,521
Production, ad valorem and other taxes	12,224	7,905
Derivative settlements to counterparties	25,146	6,117
Compensation and benefits	7,957	13,942
Interest	5,003	15,321
Environmental remediation liability	2,277	2,287
Current operating lease obligations	891	914
Other	2,632	4,877
Accounts payable and accrued liabilities	246,189	214,381
Other non-current liabilities:
Asset retirement obligations	8,186	8,413
Non-current operating lease obligations	755	975
Postretirement benefit plan obligations	959	970
Other non-current liabilities	9,900	10,358
Tubular inventory and well materials	12,200	9,500
Capitalized costs - crude oil in storage	800	800
Drilling and completion prepayment	$ 600	$ 9,600