UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 1,894	$ 0
Restricted cash	0	325
Accounts receivable, net	24,654	33,145
Short-term derivative instruments	78,407	5,879
Prepaid expenses and other current assets	11,426	13,238
Total current assets	116,381	52,587
Property and equipment, at cost:
Oil and natural gas properties, successful efforts method	762,149	797,005
Support equipment and facilities	141,178	140,023
Other	8,349	8,045
Accumulated depreciation, depletion and impairment	(562,614)	(141,350)
Property and equipment, net	349,062	803,723
Long-term derivative instruments	27,455	6,364
Restricted investments	4,622	4,622
Operating lease - long term right-of-use asset	4,076	4,406
Other long-term assets	5,529	5,837
Total assets	507,125	877,539
Current liabilities:
Accounts payable	3,947	8,310
Revenues payable	27,121	29,167
Accrued liabilities (see Note 13)	23,900	23,358
Short-term derivative instruments	690	253
Total current liabilities	55,658	61,088
Long-term debt (see Note 8)	290,000	285,000
Asset retirement obligations	91,979	90,466
Long-term derivative instruments	1,913	305
Operating lease liability	1,901	2,720
Other long-term liabilities	3,578	3,753
Total liabilities	445,029	443,332
Commitments and contingencies (see Note 15)	0	0
Stockholders' equity:
Preferred stock, $0.01 par value: 50,000,000 shares authorized; no shares issued and outstanding at March 31, 2020 and December 31, 2019, respectively	0	0
Warrants, 9,153,522 warrants issued and outstanding at March 31, 2020 and December 31, 2019, respectively	4,790	4,790
Common stock, $0.01 par value: 250,000,000 shares authorized; 37,568,164 and 37,566,540 shares issued and outstanding at March 31, 2020 and December 31, 2019, respectively	209	209
Additional paid-in capital	423,273	424,399
Accumulated earnings	(366,176)	4,809
Total stockholders' equity	62,096	434,207
Total liabilities and equity	$ 507,125	$ 877,539