Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 19,344	$ 3,753
Accounts receivables, net of allowance of $1,473 and $448, respectively	7,852	18,146
Derivative instruments		427
Prepaid expenses and other current assets	1,896	4,438
Total current assets	29,092	26,764
Property and equipment:
Oil and natural gas properties, full cost method of accounting, net	108,465	228,855
Other property and equipment, net	256	421
Total property and equipment, net	108,721	229,276
Right-of-use assets	586	1,722
Other assets	664	837
Total assets	139,063	258,599
Current liabilities:
Current portion of long-term debt	30,000	115,000
Debtor in-possession facility	30,000
Accounts payable	2,867	24,834
Accrued liabilities and other	10,774	13,972
Revenue payable	13,387	11,442
Derivative instruments		5,044
Total current liabilities	57,028	170,292
Asset retirement obligations	3,534	3,423
Derivative instruments		2,439
Long-term lease liabilities	325	1,323
Long-term deferred revenue and other liabilities	71,829	73,749
Total liabilities not subject to compromise	132,716	251,226
Liabilities subject to compromise	101,229
Total liabilities	233,945	251,226
Commitments and Contingencies (Note 19)
Stockholders’ equity (deficit):
Common stock, $0.0001 par value per share; 150,000,000 shares authorized 95,097,919 and 91,584,460 issued and outstanding as of September 30, 2020 and December 31, 2019, respectively, of which 253,598 shares are being held in treasury stock	10	9
Additional paid-in capital	329,178	342,382
Treasury stock, 253,598 shares at cost	(997)	(997)
Accumulated deficit	(683,110)	(579,552)
Total stockholders’ equity (deficit)	(354,919)	(238,158)
Total liabilities, mezzanine equity and stockholders’ equity (deficit)	139,063	258,599
Mezzanine equity:	260,037	245,531
Series C-1 Preferred Stock
Stockholders’ equity (deficit):
Mezzanine equity:	86,382	80,446
Series C-2 Preferred Stock
Stockholders’ equity (deficit):
Mezzanine equity:	20,249	18,857
Series D Preferred Stock
Stockholders’ equity (deficit):
Mezzanine equity:	30,893	29,082
Series E Preferred Stock
Stockholders’ equity (deficit):
Mezzanine equity:	68,959	66,285
Series F Preferred Stock
Stockholders’ equity (deficit):
Mezzanine equity:	$ 53,554	$ 50,861