Consolidated Statements of Cash Flows (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
CASH FLOWS DUE TO OPERATING ACTIVITIES
Net income (loss)	$ (129,539)	$ 8,586
Depreciation, depletion, and amortization	40,083	24,704
Impairment of oil and natural gas properties and assets held for sale	127,731	0
Deferred income taxes	481	(6,324)
Non-cash compensation expense	2,907	4,660
Loss (gain) on extinguishment of debt	176	0
Non-cash interest expense	6,978	6,902
Non-cash change in fair value of derivative financial instruments	(2,305)	1,476
Other	(49)	0
Decrease (increase) in:
Accounts receivable	1,131	(2,643)
Inventory and prepaid expenses	(3,453)	(1,891)
Increase (decrease) in:
Accounts payable and accrued liabilities	1,849	5,668
Revenue distributions payable	2,092	(166)
Net cash provided by operating activities	48,082	40,972
CASH FLOWS DUE TO INVESTING ACTIVITIES
Purchase, exporation and development of oil and natural gas properties	(240,113)	(129,877)
Proceeds from sale of oil and natural gas properties, property, equipment and assets held for sale	13,560	6,876
Cash settlement of hedges	2,673	0
Purchase of property and equipment	(2,061)	(8,684)
Net cash used in investing activities	(225,941)	(131,685)
CASH FLOWS DUE TO FINANCING ACTIVITIES
Borrowings on revolving bank credit facility	61,750	65,000
Payments on debt	(123,461)	(68)
Payments on 5.00% Senior Convertible Notes	(50,000)	0
Issuance of 11.375% Senior Notes	193,666	0
Proceeds from sale of common stock	105,324	0
Proceeds from sale of preferred stock	25,809	0
Dividends paid on Series B preferred stock	(4,884)	(3,469)
Fees paid related to financing activities	(16,796)	0
Contributions from non-controlling interest member	408	1,165
Distributions to non-controlling interest member	(13,086)	(3,400)
Net cash provided by financing activities	178,730	59,228
NET INCREASE (DECREASE) IN CASH	871	(31,485)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	2,357	35,554
CASH AND CASH EQUIVALENTS AT END OF PERIOD	3,228	4,069
CASH PAID DURING THE PERIOD FOR:
INTEREST, Net of amounts capitalized	14,653	9,177
INCOME TAXES, Paid (Received)	1	(30)
NON-CASH INVESTING AND FINANCING ACTIVITIES
Additions to oil and natural gas properties from issuance of common stock	31,612	0
(Increase) decrease in accounts payable for property additions	$ 21,514	$ (4,973)