CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
OPERATING REVENUES
Natural Gas	$ 206,782	$ 170,098
Brokered Natural Gas	13,444	18,408
Crude Oil and Condensate	49,981	18,592
Other	1,929	1,928
TOTAL OPERATING REVENUES	272,136	209,026
OPERATING EXPENSES
Brokered Natural Gas Cost	11,872	15,362
Direct Operations	27,320	27,007
Transportation and Gathering	30,258	12,868
Taxes Other Than Income	18,583	8,151
Exploration	4,001	6,308
Depreciation, Depletion and Amortization	110,357	77,124
General and Administrative	22,549	24,299
TOTAL OPERATING EXPENSES	224,940	171,119
Gain / (Loss) on Sale of Assets	(535)	(1,517)
INCOME FROM OPERATIONS	46,661	36,390
Interest Expense and Other	16,917	17,367
Income Before Income Taxes	29,744	19,023
Income Tax Expense	11,426	6,137
NET INCOME	$ 18,318	$ 12,886
Earnings Per Share
Basic (in dollars per share)	$ 0.09	$ 0.06
Diluted (in dollars per share)	$ 0.09	$ 0.06
Weighted-Average Shares Outstanding
Basic (in shares)	209,128	208,288
Diluted (in shares)	210,813	210,640
Dividends per common share (in dollars per share)	$ 0.02	$ 0.02