Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Financial Data (Unaudited) [Abstract]

Summarized quarterly information

The following financial information reflects all normal recurring adjustments, which are, in the opinion of management, necessary for a fair statement of the results of the interim periods. Summarized quarterly data for fiscal 2012 and 2011 are as follows (in thousands, except per share data):

		Year ended December 31, 2012
		1st Quarter			2nd Quarter			3rd Quarter			4th Quarter
Selected quarterly financial data:
Revenues	$	10,114		$	10,171		$	11,012		$	12,032
Gross profit	$	7,919		$	8,375		$	8,892		$	9,695
Operating (loss)	$	(9,615	)	$	(6,824	)	$	(6,007	)	$	(4,555	)
Net (loss)	$	(9,682	)	$	(6,825	)	$	(4,813	)	$	(4,143	)
Net (loss) per share, basic (1)	$	(0.27	)	$	(0.19	)	$	(0.13	)	$	(0.12	)
Weighted average shares outstanding, basic		35,590			36,045			35,879			35,882
Net (loss) per share, diluted (1)	$	(0.27	)	$	(0.19	)	$	(0.13	)	$	(0.12	)
Weighted average shares outstanding, diluted		35,590			36,045			35,879			35,882
		Year ended December 31, 2011
		1st Quarter			2nd Quarter			3rd Quarter			4th Quarter
Selected quarterly financial data:
Revenues	$	17,791		$	16,105		$	12,632		$	11,239
Gross profit	$	14,015		$	12,545		$	8,933		$	8,513
Operating (loss)	$	(13,012	)	$	(13,046	)	$	(127,983	)	$	(11,625	)
Net (loss)	$	(7,753	)	$	(7,847	)	$	(134,481	)	$	(9,525	)
Net (loss) per share, basic (1)	$	(0.22	)	$	(0.22	)	$	(3.76	)	$	(0.27	)
Weighted average shares outstanding, basic		35,263			35,775			35,728			35,696
Net (loss) per share, diluted (1)	$	(0.22	)	$	(0.22	)	$	(3.76	)	$	(0.27	)
Weighted average shares outstanding, diluted		35,263			35,775			35,728			35,696

(1) Basic and diluted net (loss) per share is computed independently for each of the quarters presented. Therefore, the sum of the quarterly per share amounts will not necessarily equal the total for the year.