CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 285,814	$ 255,722
Restricted cash - other	1,750	1,746
Accounts receivable, net	26,572	34,735
Derivative contracts	0	4,429
Prepaid expenses	2,318	523
Other current assets	7,544	7,747
Total current assets	323,998	304,902
Oil and natural gas properties, using full cost method of accounting
Proved	1,519,873	1,507,690
Unproved	11,565	11,516
Less: accumulated depreciation, depletion and impairment	(1,382,740)	(1,380,574)
Net oil and natural gas properties	148,698	138,632
Other property, plant and equipment, net	90,641	92,244
Other assets	311	190
Deferred tax assets	64,529	64,529
Total assets	628,177	600,497
Current liabilities
Accounts payable and accrued expenses	49,142	46,335
Asset retirement obligation	16,075	16,074
Other current liabilities	1,061	870
Total current liabilities	66,278	63,279
Asset retirement obligation	48,560	47,635
Other long-term obligations	1,474	1,661
Total liabilities	116,312	112,575
Commitments and contingencies (Note 6)
Stockholders’ Equity
Common stock, $0.001 par value; 250,000 shares authorized; 36,902 issued and outstanding at March 31, 2023 and 36,868 issued and outstanding at December 31, 2022	37	37
Additional paid-in capital	1,151,874	1,151,689
Accumulated deficit	(640,046)	(663,804)
Total stockholders’ equity	511,865	487,922
Total liabilities and stockholders’ equity	$ 628,177	$ 600,497