Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 36,611	$ 3,137
Accounts receivable
Oil, natural gas liquid and natural gas sales	14,304	15,991
Joint interest owners and others, net	1,594	1,310
Derivative financial instruments	0	5,095
Prepaid expenses and other	9,936	2,208
Total current assets	62,445	27,741
Oil and gas properties, using the successful efforts method of accounting
Proved properties	1,099,521	1,050,168
Unproved properties	77,367	76,462
Other property and equipment	21,914	21,401
Less accumulated depreciation, depletion, amortization and impairment	(723,351)	(464,671)
Property and equipment, net	475,451	683,360
Accounts receivable – related party	6,023	5,816
Derivative financial instruments	0	1,754
Other non-current assets	2,052	2,108
Total assets	545,971	720,779
Current liabilities
Accounts payable	10	33,355
Accounts payable – related party	0	189
Oil, natural gas liquid and natural gas sales payable	0	14,811
Total accrued liabilities	429	26,905
Derivative financial instruments	0	8,564
Current maturities of long-term debt	285,000	247,000
Total current liabilities	285,439	330,824
Long-term liabilities
Long-term debt	8,781	255,068
Asset retirement obligations	7,583	7,055
Deferred tax liabilities, net	0	931
Warrant liability	0	129
Warrant liability – related party	0	235
Derivative financial instruments	0	1,898
Other non-current liabilities	0	3,752
Total long-term liabilities	16,364	269,068
Total liabilities subject to compromise	309,193	0
Total liabilities	610,996	599,892
Commitments and contingencies (Note 11)
Stockholders' (deficit) equity
Class A voting common stock, $0.001 par value, 100,000,000 shares authorized, 25,375,314 and 24,945,594 shares issued and outstanding, respectively	142,655	142,655
Series A-1 convertible participating preferred stock, $0.001 par value, 104,893 and 100,328 shares issued and outstanding, respectively	0	0
Additional paid-in capital	176,012	175,738
Accumulated deficit	(383,692)	(197,506)
Total stockholders' (deficit) equity	(65,025)	120,887
Total liabilities and stockholders' (deficit) equity	$ 545,971	$ 720,779