Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 34,891	$ 15,655
Revenue receivable	6,364	15,340
Joint interest billing receivable	4,716	6,597
Other receivable	0	7,750
Derivative asset	0	1,174
Deposit for surety bonds	3,550	8,300
Other current assets	3,261	2,125
Total current assets	52,782	56,941
Oil and gas properties:
Oil and gas properties, full cost method	1,361,374	1,369,861
Unevaluated oil and gas properties	23,492	21,854
Accumulated depreciation, depletion and amortization	(1,301,592)	(1,285,660)
Oil and gas properties, net	83,274	106,055
Other property and equipment	9,282	9,353
Accumulated depreciation of other property and equipment	(9,056)	(8,843)
Total property and equipment	83,500	106,565
Other assets	1,005	792
Total assets	137,287	164,298
Current liabilities:
Accounts payable to vendors	11,699	32,148
Advances from co-owners	2,020	1,730
Oil and gas revenue payable	7,765	19,344
Accrued interest	639	1,724
Asset retirement obligation	183	687
Derivative liability	0	731
Other accrued liabilities	1,259	6,476
Total current liabilities	23,565	62,840
Multi-draw Term Loan	49,738	27,963
Asset retirement obligation	2,297	30,623
Preferred stock dividend payable	0	10,278
Other long-term liabilities	0	131
Liabilities Not Subject To Compromise	75,600	413,233
Liabilities subject to compromise	323,854	0
Total liabilities	399,454	413,233
Stockholders’ equity:
Preferred stock, $.001 par value; authorized 5,000 shares; issued and outstanding 1,495 shares	1	1
Common stock, $.001 par value; authorized 150,000 shares; issued and outstanding 25,587 and 25,521 shares, respectively	26	26
Paid-in capital	314,268	313,244
Accumulated other comprehensive income	0	278
Accumulated deficit	(576,462)	(562,484)
Total stockholders’ equity	(262,167)	(248,935)
Total liabilities and stockholders’ equity	137,287	164,298
10% Senior Secured Notes due 2021 | Senior Notes
Current liabilities:
10% Senior Secured Notes	0	9,821
10% Senior Secured PIK Notes due 2021 | Payment in Kind (PIK) Note
Current liabilities:
10% Senior Secured Notes	$ 0	$ 271,577