Quarterly Results of Operations (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Results of Operations (Unaudited) [Abstract]

Summary of quarterly results of operations

The following tables present a condensed summary of quarterly results of operations for the years ended December 31, 2012 and 2011 (in thousands, except per share data).

	Year ended December 31, 2012
	First Quarter			Second Quarter			Third Quarter			Fourth  Quarter
Revenues	$	19,000		$	19,670		$	18,475		$	23,428
Cost and expenses	$	21,320		$	20,939		$	23,132		$	21,173
Net (loss) income	$	(2,292	)	$	(1,472	)	$	(4,675	)	$	2,267
Net (loss) income per share:
Basic	$	(0.12	)	$	(0.08	)	$	(0.25	)	$	0.12
Diluted	$	(0.12	)	$	(0.08	)	$	(0.25	)	$	0.12

	Year ended December 31, 2011
	First Quarter			Second Quarter			Third Quarter		Fourth Quarter
Revenues	$	18,156		$	16,265		$	46,054	$	22,962
Cost and expenses	$	20,134		$	20,326		$	27,543	$	24,705
Net (loss) income	$	(1,894	)	$	(3,999	)	$	15,249	$	(1,937	)
Net (loss) income per share:
Basic	$	(0.10	)	$	(0.21	)	$	0.82	$	(0.10	)
Diluted	$	(0.10	)	$	(0.21	)	$	0.81	$	(0.10	)