Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 141,016	$ 18,243
Revenue receivable	7,750	16,485
Joint interest billing receivable	49,112	46,778
Other receivable	13,915	0
Derivative asset	6,247	8,631
Prepaid drilling costs	102	847
Other current assets	6,735	5,566
Total current assets	224,877	96,550
Oil and gas properties:
Oil and gas properties, full cost method	1,279,721	2,222,753
Unevaluated oil and gas properties	29,743	109,119
Accumulated depreciation, depletion and amortization	(1,040,886)	(1,648,060)
Oil and gas properties, net	268,578	683,812
Other property and equipment	15,087	14,953
Accumulated depreciation of other property and equipment	(10,998)	(10,313)
Total property and equipment	272,667	688,452
Other assets, net of accumulated depreciation and amortization of $8,997 and $7,847, respectively	5,528	5,893
Total assets	503,072	790,895
Current liabilities:
Accounts payable to vendors	62,761	102,954
Advances from co-owners	30,665	12,819
Oil and gas revenue payable	24,192	22,333
Accrued interest and preferred stock dividend	12,832	12,764
Asset retirement obligation	1,405	2,756
Derivative liability	572	0
Accrued acquisition cost	5,655	17,690
Other accrued liabilities	6,722	5,394
Total current liabilities	144,804	176,710
Bank debt	0	75,000
10% Senior Notes	350,000	350,000
Asset retirement obligation	53,218	52,214
Other long-term liability	$ 510	$ 62
Commitments and contingencies
Stockholders’ equity (deficit):
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 64,957 and 64,721 shares, respectively	65	65
Paid-in capital	288,767	285,957
Accumulated other comprehensive income	3,564	5,420
Accumulated deficit	(337,857)	(154,534)
Total stockholders’ equity (deficit)	(45,460)	136,909
Total liabilities and stockholders’ equity (deficit)	$ 503,072	$ 790,895