Summarized Quarterly Financial Information - Unaudited (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

Summarized quarterly financial information is as follows (amounts in thousands except per share data):

	Quarter Ended
	March 31			June 30			September 30			December 31
2012:
Revenues	$	36,041		$	33,413		$	33,951		$	38,186
Loss from operations (1)	(18,314		)	(52,183		)	(35,919		)	(24,027		)
Loss available to common stockholders (1)	(18,608		)	(54,520		)	(38,639		)	(25,451		)
Earnings per share:
Basic	$	(0.30	)	$	(0.87	)	$	(0.62	)	$	(0.41	)
Diluted	$	(0.30	)	$	(0.87	)	$	(0.62	)	$	(0.41	)
2011:
Revenues	$	41,603		$	41,975		$	39,029		$	38,093
Income (loss) from operations (2)	3,178			(2,088		)	4,749			2,899
Net income (loss) available to common stockholders (2)	1,897			(3,045		)	3,727			2,830
Earnings per share:
Basic	$	0.03		$	(0.05	)	$	0.06		$	0.04
Diluted	$	0.03		$	(0.05	)	$	0.06		$	0.04

(1) Loss from operations and net loss available to common stockholders reported during the three months ended March 31, June 30, September 30 and December 31, 2012 included ceiling test write-downs of $20.1 million, $53.5 million, $35.4 million and $28.1 million, respectively.

(2) Income (loss) from operations and net income (loss) available to common stockholders reported during the three months ended March 31 and June 30, 2011 included ceiling test write-downs of $5.9 million and $13.0 million, respectively.