Quarterly Financial Data

12 Months Ended

Dec. 31, 2011

Quarterly Financial Data [Abstract]

Quarterly Financial Data

13. Quarterly Financial Data (unaudited)

Financial results for interim periods do not necessarily indicate trends for any 12-month period. Quarterly results can be affected by the number of procedures performed and the timing of certain expense items (dollars in thousands, except per share amounts):

	2011 Quarters											2010 Quarters
	First		Second			Third			Fourth			First			Second			Third			Fourth
Revenues	$	32,282	$	24,416		$	21,790		$	24,495		$	34,013		$	26,290		$	20,263		$	19,259
Operating income (loss)		1,980		(2,767	)		(4,102	)		(1,649	)		(681	)		(5,396	)		(8,504	)		(7,384	)
Income (loss) before income taxes		2,060		(2,690	)		(3,768	)		(1,670	)		(505	)		(4,251	)		(8,401	)		(7,377	)
Net income (loss)		2,019		(2,765	)		(3,800	)		(1,652	)		(564	)		(4,287	)		(8,440	)		(7,286	)
Loss per share
Basic and Diluted	$	0.11	$	(0.15	)	$	(0.20	)	$	(0.09	)	$	(0.03	)	$	(0.23	)	$	(0.45	)	$	(0.39	)