Condensed Consolidated Balance Sheets (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
CURRENT ASSETS:
Cash and cash equivalents	$ 44	$ 37
Accounts receivable:
Oil and natural gas sales, net of allowance of $50 ($50 at December 31, 2010)	8,394	9,797
Joint interest operations, net of allowance of $479 ($479 at December 31, 2010)	443	631
Other, net of allowance of $11 ($48 at December 31, 2010)	452	155
Derivative assets	5,070	1,340
Prepaid expenses	540	1,657
Deferred tax asset	0	3,526
Inventory	3,883	3,382
Other current assets	537	4
Total current assets	19,363	20,529
PROPERTIES AND EQUIPMENT, AT COST:
Proved oil and natural gas properties and equipment, using full cost accounting	708,984	689,472
Other property and equipment	10,471	10,072
Total properties and equipment, at cost	719,455	699,544
Less accumulated depreciation, amortization and impairment	(505,179)	(489,634)
Total properties and equipment	214,276	209,910
OTHER ASSETS:
Deferred tax asset	26,289	31,001
Derivative assets	8,125	0
Deferred loan costs, net of accumulated amortization of $716 ($5,012 at December 31, 2010)	6,287	2,609
Other	988	952
Total assets	275,328	265,001
Accounts payable:
Trade	10,361	17,149
Oil and natural gas proceeds due others	8,924	9,414
Other	3	452
Accrued liabilities:
Compensation	1,524	1,948
Interest	475	2,448
Income taxes	318	699
Other	97	10
Deferred tax liability	2,891	0
Derivative liabilities	264	0
Asset retirement obligations	367	639
Long-term debt due within one year	146	127
Total current liabilities	25,370	32,886
DERIVATIVE LIABILITIES	303	203
LONG-TERM DEBT	200,252	196,965
ASSET RETIREMENT OBLIGATIONS	31,968	30,770
OTHER LONG-TERM LIABILITIES	10	10
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY:
Common stock, $0.0001 par value, 100,000,000 shares authorized, 83,341,299 and 82,597,829 shares issued, 79,067,298 and 78,386,983 shares outstanding at September 30, 2011 and December 31, 2010, respectively	8	8
Additional paid-in capital	228,616	226,042
Treasury stock - 4,274,001 shares (4,210,846 shares at December 31, 2010) at cost	(7,093)	(6,976)
Accumulated deficit	(204,106)	(214,907)
Stockholders' equity	17,425	4,167
Total liabilities and stockholders' equity	$ 275,328	$ 265,001