Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenues:
Oil and gas sales	$ 55,578	$ 33,913	$ 129,630	$ 103,286
Gas gathering revenue	9	38	68	119
Total revenues	55,587	33,951	129,698	103,405
Expenses:
Lease operating expenses	12,652	9,658	31,208	28,408
Production taxes	1,248	880	3,757	112
Depreciation, depletion and amortization	22,475	15,032	49,882	46,024
Ceiling test writedown	0	35,391	0	108,987
General and administrative	9,132	5,963	20,199	17,541
Accretion of asset retirement obligation	543	525	1,203	1,542
Interest expense	8,071	2,338	14,051	7,021
Total expenses	54,121	69,787	120,300	209,635
Other income (expense):
Other income	176	257	432	529
Derivative income (expense)	45	(340)	202	(715)
Other operating income (expense), net	221	(83)	634	(186)
Income (loss) from operations	1,687	(35,919)	10,032	(106,416)
Income tax expense (benefit)	17	1,435	(474)	1,496
Net income (loss)	1,670	(37,354)	10,506	(107,912)
Preferred stock dividend	1,287	1,285	3,854	3,855
Net income (loss) available to common stockholders	$ 383	$ (38,639)	$ 6,652	$ (111,767)
Basic
Net income (loss) per share (in usd per share)	$ 0.01	$ (0.62)	$ 0.10	$ (1.79)
Diluted
Net income (loss) per share (in usd per share)	$ 0.01	$ (0.62)	$ 0.10	$ (1.79)
Weighted average number of common shares:
Basic (shares)	63,096	62,492	62,936	62,356
Diluted (shares)	63,242	62,492	63,105	62,356