Consolidated Balance Sheets (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 50,641	$ 63,237
Revenue receivable	9,667	13,386
Joint interest billing receivable	26,169	12,193
Other receivable	13,906	13,795
Prepaid drilling costs	1,007	789
Drilling pipe inventory	5,986	11,711
Other current assets	4,052	1,827
Total current assets	111,428	116,938
Oil and gas properties:
Oil and gas properties, full cost method	1,477,448	1,433,642
Unevaluated oil and gas properties	81,162	54,851
Accumulated depreciation, depletion and amortization	(1,222,663)	(1,175,553)
Oil and gas properties, net	335,947	312,940
Gas gathering assets	4,177	4,177
Accumulated depreciation and amortization of gas gathering assets	(1,645)	(1,496)
Total property and equipment	338,479	315,621
Other assets, net of accumulated depreciation and amortization of $7,221 and $6,435, respectively	6,191	6,958
Total assets	456,098	439,517
Current liabilities:
Accounts payable to vendors	42,377	26,097
Advances from co-owners	12,297	7,963
Oil and gas revenue payable	4,622	7,220
Accrued interest and preferred stock dividend	6,073	6,575
Hedge liability	0	1,089
Asset retirement obligation	674	1,517
Other accrued liabilities	5,200	7,380
Total current liabilities	71,243	57,841
10% Senior Notes	150,000	150,000
Asset retirement obligation	24,684	23,075
Other liabilities	490	439
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 62,020 and 61,565 shares, respectively	62	62
Paid-in capital	267,928	266,907
Accumulated other comprehensive income (loss)	557	(1,089)
Accumulated deficit	(58,867)	(57,719)
Total stockholders' equity	209,681	208,162
Total liabilities and stockholders' equity	$ 456,098	$ 439,517