CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 11,187	$ 4,275
Restricted cash - other	1,454	1,693
Accounts receivable, net	16,292	28,644
Derivative contracts	0	114
Prepaid expenses	1,105	3,342
Other current assets	80	538
Total current assets	30,118	38,606
Oil and natural gas properties, using full cost method of accounting
Proved	1,479,664	1,484,359
Unproved	18,653	24,603
Less: accumulated depreciation, depletion and impairment	(1,367,703)	(1,129,622)
Net oil and natural gas properties	130,614	379,340
Other property, plant and equipment, net	104,825	188,603
Other assets	564	1,140
Total assets	266,121	607,689
Current liabilities
Accounts payable and accrued expenses	42,449	64,937
Current maturities of long-term debt	12,000	0
Derivative contracts	3,088	0
Asset retirement obligation	22,007	22,119
Other current liabilities	962	1,367
Total current liabilities	80,506	88,423
Long-term debt	0	57,500
Asset retirement obligation	53,436	52,897
Other long-term obligations	4,217	6,417
Total liabilities	138,159	205,237
Commitments and contingencies
Stockholders’ Equity
Common stock, value	36	36
Warrants	88,520	88,520
Additional paid-in capital	1,061,961	1,059,253
Accumulated deficit	(1,022,555)	(745,357)
Total stockholders’ equity	127,962	402,452
Total liabilities and stockholders’ equity	$ 266,121	$ 607,689