CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
REVENUES:
Oil sales	$ 218,430	$ 177,464	$ 75,875
Natural gas sales	16,030	20,665	10,505
Natural gas liquid sales	23,617	15,683	2,731
Losses on commodity derivative contracts - net	(11,158)	(4,844)	(26,268)
Other	754	465	209
Total revenues	247,673	209,433	63,052
EXPENSES:
Lease operating and workover	30,500	16,117	12,861
Severance and other taxes	24,921	13,640	6,986
Asset retirement accretion	723	334	175
Depreciation, depletion, and amortization	125,561	91,699	41,827
General and administrative	30,541	68,915	16,847
Acquisition and transaction costs	14,884
Total expenses	227,130	190,705	78,696
OPERATING INCOME (LOSS)	20,543	18,728	(15,644)
OTHER INCOME (EXPENSE)
Interest income	245	23	9
Interest expense - net of amounts capitalized	(12,999)	(2,094)
Total other income (expense)	(12,754)	(2,071)	9
INCOME (LOSS) BEFORE TAXES	7,789	16,657	(15,635)
Income tax expense	157,886
NET INCOME (LOSS)	(150,097)	16,657	(15,635)
Undecleared preferred stock dividend at company option, payable in shares upon conversion of in cash (Note 10)	(6,500)
NET INCOME (LOSS) AVAILABLE TO COMMON SHAREHOLDERS	(156,597)	16,657	(15,635)
Unaudited pro forma
OTHER INCOME (EXPENSE)
NET INCOME (LOSS)	(156,597)
NET INCOME (LOSS) AVAILABLE TO COMMON SHAREHOLDERS	$ (156,597)
Pro forma loss per share
Basic and Diluted (Note 12) (in dollars per share)	$ (2.61)
Pro forma weighted average shares outstanding
Basic and Diluted (Note 12) (in shares)	59,979