Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 1,142	$ 3,137
Accounts receivable
Oil, natural gas liquid and natural gas sales	10,229	15,991
Joint interest owners and others, net	836	1,310
Derivative financial instruments	74,425	5,095
Prepaid expenses and other	2,873	2,208
Total current assets	89,505	27,741
Oil and gas properties, using the successful efforts method of accounting
Proved properties	1,083,692	1,050,168
Unproved properties	77,162	76,462
Other property and equipment	21,424	21,401
Less accumulated depreciation, depletion, amortization and impairment	(688,692)	(464,671)
Property and equipment, net	493,586	683,360
Accounts receivable – related party	5,936	5,816
Derivative financial instruments	25,434	1,754
Other non-current assets	1,885	2,108
Total assets	616,346	720,779
Current liabilities
Accounts payable	33,284	33,355
Accounts payable – related party	381	189
Oil, natural gas liquid and natural gas sales payable	15,257	14,811
Accrued liabilities	23,049	26,905
Derivative financial instruments	1,501	8,564
Current maturities of long-term debt	513,259	247,000
Total current liabilities	586,731	330,824
Long-term liabilities
Long-term debt	9,148	255,068
Asset retirement obligations	6,888	7,055
Deferred tax liabilities, net	0	931
Warrant liability	0	129
Warrant liability – related party	1	235
Derivative financial instruments	1,896	1,898
Other non-current liabilities	1,346	3,752
Total long-term liabilities	19,279	269,068
Commitments and contingencies (Note 11)
Stockholders' Equity
Class A voting common stock, $0.001 par value, 100,000,000 shares authorized, 25,254,029 and 24,945,594 shares issued and outstanding, respectively	142,655	142,655
Series A-1 convertible participating preferred stock, $0.001 par value, 102,585 and 100,328 shares issued and outstanding, respectively	0	0
Additional paid-in capital	175,978	175,738
Accumulated deficit	(308,297)	(197,506)
Total stockholders' equity	10,336	120,887
Total liabilities and stockholders' equity	$ 616,346	$ 720,779