Condensed Consolidated Statement of Cash Flows (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash Flows from Operating Activities:
Net Income (Loss)	$ (23,060)	$ (14,585)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation, depletion and amortization	13,326	13,593
Impairment of oil and gas properties	0	7,692
Deferred tax expense (benefit)	(875)	8,445
Unrealized (gains) losses on derivatives	1,984	(5,036)
Amortization of non-cash compensation	1,792	1,998
Amortization of loan costs and discount	6,560	3,313
Non-cash interest expense	5,928	3,409
Other	2,789	(3,565)
Changes in operating assets and liabilities:
(Increase) decrease in receivables	(1,687)	6,027
(Increase) decrease in other current assets	(9,376)	(1,738)
Increase (decrease) in liabilities	(21,248)	4,900
Net Cash Provided by (Used in) Operating Activities	(23,867)	24,453
Cash Flows From Investing Activities:
Capital expenditures	(66,727)	(41,392)
Acquisitions	(22,240)	(33,047)
Proceeds from sales, net of cash		0
(Increase) Decrease in restricted cash	(1,347)	2,878
Net Cash Provided by (Used in) Investing Activities	(90,314)	(71,561)
Cash Flows From Financing Activities:
Repayments of borrowings	(92,050)	(9,317)
Borrowings under debt agreements	0	25,000
Proceeds from issuance of common Stock	118,444	20,011
Dividends paid	(973)	(1,057)
Other financing	(278)	(1,223)
Net Cash Provided by (Used in) Financing Activities	25,143	33,414
Net Increase (Decrease) n Cash and Cash Equivalents	(89,038)	(13,694)
Cash and Cash Equivalents, Beginning of Period	99,267	27,287
Cash and Cash Equivalents, End of Period	10,229	13,593
Cash and Cash Equivalents, End of Period:
Total	$ 10,229	$ 13,593