UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 12,755
Accounts receivable, net (see Note 12)	65,978	$ 80,455
Prepaid expenses and other current assets	15,953	18,789
Total current assets	94,686	99,244
Property and equipment, at cost:
Oil and natural gas properties, successful efforts method	850,387	840,310
Support equipment and facilities	147,497	147,496
Other	9,798	9,648
Accumulated depreciation, depletion and amortization	(663,970)	(658,162)
Property and equipment, net	343,712	339,292
Long-term derivative instruments	99	0
Restricted investments	13,406	11,326
Operating lease - long term right-of-use asset	7,088	7,376
Deferred tax asset	259,470
Other long-term assets	871	2,240
Total assets	719,332	459,478
Current liabilities:
Accounts payable	21,728	38,414
Revenues payable	20,328	22,105
Accrued liabilities (see Note 12)	66,645	58,449
Short-term derivative instruments	3,114	20,884
Total current liabilities	111,815	139,852
Long-term debt (see Note 7)	125,000	190,000
Asset retirement obligations	116,529	114,614
Operating lease liability	6,230	6,567
Other long-term liabilities	12,764	13,010
Total liabilities	372,338	464,043
Commitments and contingencies (see Note 14)
Stockholders' equity (deficit):
Preferred stock, $0.01 par value: 50,000,000 shares authorized; no shares issued and outstanding at March 31, 2023 and December 31, 2022
Common stock, $0.01 par value: 250,000,000 shares authorized; 38,969,742 and 38,459,731 shares issued and outstanding at March 31, 2023 and December 31, 2022, respectively	391	386
Additional paid-in capital	431,046	432,251
Accumulated deficit	(84,443)	(437,202)
Total stockholders' equity (deficit)	346,994	(4,565)
Total liabilities and equity	$ 719,332	$ 459,478