Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 19,409	$ 14,904
Revenue receivable	31,561	17,742
Joint interest billing receivable	27,212	42,595
Other receivable	0	9,208
Derivative asset	2,323	830
Prepaid drilling costs	963	1,698
Other current assets	7,411	2,607
Total current assets	88,879	89,584
Oil and gas properties:
Oil and gas properties, full cost method	2,003,907	1,734,477
Unevaluated oil and gas properties	87,117	71,713
Accumulated depreciation, depletion and amortization	(1,530,928)	(1,472,244)
Oil and gas properties, net	560,096	333,946
Other property and equipment	13,340	12,370
Accumulated depreciation of other property and equipment	(8,512)	(7,607)
Total property and equipment	564,924	338,709
Derivative asset	305	0
Other assets, net of accumulated depreciation and amortization of $5,166 and $4,240, respectively	9,783	5,110
Total assets	663,891	433,403
Current liabilities:
Accounts payable to vendors	31,353	58,960
Advances from co-owners	7,144	20,459
Oil and gas revenue payable	45,438	26,175
Accrued interest and preferred stock dividend	4,175	6,190
Asset retirement obligation	1,502	2,351
Derivative liability	525	233
Other accrued liabilities	9,616	6,535
Total current liabilities	99,753	120,903
Bank debt	75,000	50,000
10% Senior Notes	350,000	150,000
Asset retirement obligation	41,350	24,909
Commitments and contingencies
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 63,353 and 62,768 shares, respectively	63	63
Paid-in capital	279,260	276,534
Accumulated other comprehensive income	1,340	521
Accumulated deficit	(182,876)	(189,528)
Total stockholders’ equity	97,788	87,591
Total liabilities and stockholders’ equity	$ 663,891	$ 433,403