Condensed Consolidated Balance Sheets (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Current assets
Cash and equivalents	$ 1,305	$ 730
Accounts receivable - trade, net	11,092	11,845
Other receivables	2,357	1,153
Inventory	5,088	6,161
Other current assets	7,949	2,799
Derivative financial instruments	29,714	31,588
Total	57,505	54,276
Oil and gas properties, full cost accounting, net	119,443	116,488
Pipeline assets, net	60,229	61,148
Other property and equipment, net	15,091	15,964
Other noncurrent assets, net	4,932	9,303
Derivative financial instruments	30,593	39,633
Total assets	287,793	296,812
Current liabilities
Accounts payable	6,139	7,030
Revenue payable	5,557	5,898
Accrued expenses and other current liabilities	11,257	7,190
Litigation reserve	10,620	1,020
Current portion of long-term debt	9,000	10,500
Derivative financial instruments	4,669	3,792
Total	47,242	35,430
Derivative financial instruments	6,050	6,681
Long-term debt	183,000	209,721
Asset retirement obligations	7,516	7,150
Other noncurrent liabilities	400	0
Total liabilities	244,208	258,982
Commitments and contingencies
Stockholders' equity
Common stock, $0.01 par value; authorized shares - 40,000,000; 8,238,982 and 8,429,168 issued and outstanding at December 31, 2010 and June 30, 2011, respectively	84	82
Additional paid-in capital	376,609	377,538
Accumulated deficit	(386,744)	(390,414)
Total deficit	(10,049)	(12,792)
Total liabilities and equity	287,793	296,812
Redeemable Preferred Stock | Series A Preferred Stock
Current liabilities
Series A Cumulative Redeemable Preferred Stock, $0.01 par value; issued and outstanding - 6,000 shares	53,634	50,622
Series B Preferred Stock
Stockholders' equity
Preferred stock, $0.01 par value; authorized shares - 5,000,000; 195,842 and 202,043 Series B Voting Preferred Stock issued and outstanding at December 31, 2010 and June 30, 2011, respectively	$ 2	$ 2