Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenues:
Oil and gas sales	$ 60,581	$ 38,076	$ 120,547	$ 74,052
Expenses:
Lease operating expenses	12,168	8,837	24,426	18,556
Production taxes	1,492	1,481	2,969	2,509
Depreciation, depletion and amortization	21,702	14,536	42,130	27,407
General and administrative	6,467	6,351	12,709	11,067
Accretion of asset retirement obligation	708	328	1,499	660
Interest expense	7,380	3,116	15,016	5,980
Costs and Expenses	49,917	34,649	98,749	66,179
Other income:
Other income	215	88	404	315
Derivative income	0	594	0	157
Other Income (Expense), Net	215	682	404	472
Income from operations	10,879	4,109	22,202	8,345
Income tax benefit	0	(840)	0	(491)
Net income	10,879	4,949	22,202	8,836
Preferred stock dividend	1,287	1,287	2,567	2,567
Income available to common stockholders	$ 9,592	$ 3,662	$ 19,635	$ 6,269
Basic
Net income (loss) per share (in usd per share)	$ 0.15	$ 0.06	$ 0.30	$ 0.10
Diluted
Net income (loss) per share (in usd per share)	$ 0.15	$ 0.06	$ 0.30	$ 0.10
Weighted average number of common shares:
Basic (shares)	64,103	62,963	63,940	62,899
Diluted (shares)	64,167	63,130	63,996	63,084