Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 1,259	$ 3,137
Accounts receivable
Oil, natural gas liquid and natural gas sales	11,681	15,991
Joint interest owners and others, net	821	1,310
Derivative financial instruments	45,502	5,095
Prepaid expenses and other	7,150	2,208
Total current assets	66,413	27,741
Oil and gas properties, using the successful efforts method of accounting
Proved properties	1,102,958	1,050,168
Unproved properties	77,597	76,462
Other property and equipment	21,537	21,401
Less accumulated depreciation, depletion, amortization and impairment	(705,182)	(464,671)
Property and equipment, net	496,910	683,360
Accounts receivable – related party	5,978	5,816
Derivative financial instruments	12,447	1,754
Other non-current assets	2,232	2,108
Total assets	583,980	720,779
Current liabilities
Accounts payable	12,896	33,355
Accounts payable – related party	269	189
Oil, natural gas liquid and natural gas sales payable	10,061	14,811
Accrued liabilities	34,098	26,905
Derivative financial instruments	2,537	8,564
Current maturities of long-term debt	531,583	247,000
Total current liabilities	591,444	330,824
Long-term liabilities
Long-term debt	11,250	255,068
Asset retirement obligations	7,251	7,055
Deferred tax liabilities, net	0	931
Warrant liability	0	129
Warrant liability – related party	1	235
Derivative financial instruments	2,993	1,898
Other non-current liabilities	1,270	3,752
Total long-term liabilities	22,765	269,068
Commitments and contingencies (Note 11)
Stockholders' (deficit) equity
Class A voting common stock, $0.001 par value, 100,000,000 shares authorized, 25,369,191 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	176,006	175,738
Accumulated deficit	(348,890)	(197,506)
Total stockholders' (deficit) equity	(30,229)	120,887
Total liabilities and stockholders' (deficit) equity	$ 583,980	$ 720,779