Summarized Quarterly Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

Summarized quarterly data for the years ended December 31, 2012 and 2011 are as follows:

	Fiscal 2012 Quarter Ended
	March 31,			June 30,			September 30,			December 31,
	(in thousands, except per share amounts)
Revenue	$	18,347		$	8,030		$	8,453		$	9,496
Cost of Sales	$	5,062		$	4,167		$	4,249		$	6,018
Gross Profit	$	13,285		$	3,863		$	4,204		$	3,478
Net loss	$	(10,292	)	$	(17,169	)	$	(19,282	)	$	(643	)
Net loss per share, basic and diluted	$	(0.16	)	$	(0.26	)	$	(0.21	)	$	(0.01	)
Weighted-average shares outstanding, basic and diluted	65,369			65,449			90,370			100,714

	Fiscal 2011 Quarter Ended
	March 31,			June 30,			September 30,			December 31,
	(in thousands, except per share amounts)
Revenue	$	9,040		$	10,237		$	10,398		$	7,901
Cost of Sales	$	4,875		$	3,975		$	5,482		$	4,961
Gross Profit	$	4,165		$	6,262		$	4,916		$	2,940
Net loss	$	(18,983	)	$	(19,177	)	$	(22,038	)	$	(23,705	)
Net loss per share, basic and diluted	$	(0.56	)	$	(0.56	)	$	(0.59	)	$	(0.36	)
Weighted-average shares outstanding, basic and diluted	33,973			34,018			37,320			65,215