Discontinued Operations (Tables)

12 Months Ended

Dec. 31, 2012

Discontinued Operations and Disposal Groups [Abstract]

Summary of the components of loss from discontinued operations

The following is a summary of the components of loss from discontinued operations for the years ended December 31, 2010, 2011 and 2012 (in thousands):

	2010			2011			2012
Net revenue	$	656		$	1,634		$	360
Cost of goods sold	2,011			5,284			2,501
Gross profit	(1,355		)	(3,650		)	(2,141		)
Operating expenses:
Research and development	3,465			4,355			741
Sales and marketing	327			651			56
General and administrative	766			762			765
Restructuring charge	107			—			844
Goodwill impairment charge	—			4,140			—
Total operating expenses	4,665			9,908			2,406
Operating loss	(6,020		)	(13,558		)	(4,547		)
Other income (expense), net	1			(2		)	(1		)
Loss from discontinued operations	$	(6,019	)	$	(13,560	)	$	(4,548	)

The following is a summary of the carrying amounts of major classes of assets and liabilities related to discontinued operations as of December 31, 2011 and 2012 (in thousands):

	December 31, 2011		December 31, 2012
Cash and cash equivalents	$	—	$	—
Inventories	56		—
Prepaid expenses and other assets	110		5
Total current assets	166		5
Property and equipment, net	1,031		—
Intangible assets, net	1,824		—
Other assets	54		55
Total assets	3,075		60
Accounts payable	203		7
Accrued compensation	372		—
Accrued expenses	232		20
Deferred revenue	319		—
Restructuring accrual	—		206
Total current liabilities	1,126		233