Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenues:
Oil and gas sales	$ 133,896	$ 152,981	$ 441,440	$ 442,015
Price-risk management and other, net	4,898	(2,048)	(2,472)	(714)
Total Revenues	138,794	150,933	438,968	441,301
Costs and Expenses:
General and administrative, net	10,981	11,146	33,565	35,062
Depreciation, depletion, and amortization	65,331	67,274	201,072	187,503
Accretion of asset retirement obligation	1,445	1,478	4,246	4,732
Lease operating cost	22,067	23,078	70,606	76,919
Transportation and gas processing	5,107	5,783	16,412	15,386
Severance and other taxes	10,191	11,695	28,829	32,221
Interest expense, net	18,197	17,495	55,295	51,297
Total Costs and Expenses	133,319	137,949	410,025	403,120
Income Before Income Taxes	5,475	12,984	28,943	38,181
Provision for Income Taxes	3,001	5,625	14,200	15,235
Net Income	$ 2,474	$ 7,359	$ 14,743	$ 22,946
Per Share Amounts-
Earnings Per Share (Basic)	$ 0.06	$ 0.17	$ 0.34	$ 0.53
Earnings Per Share (Diluted)	$ 0.06	$ 0.17	$ 0.33	$ 0.53
Weighted Average Shares Outstanding - Basic	43,850	43,389	43,768	43,308
Weighted Average Shares Outstanding - Diluted	44,473	43,704	44,299	43,624