Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2012	Sep. 30, 2011	Sep. 28, 2012	Sep. 30, 2011
Net income (loss)	$ (8,230)	$ 3,546	$ (15,741)	$ 4,452
Change in unrealized gain (loss) on investments, net	1	(10)	40	(13)
Foreign currency translation	404	(444)	318	79
Total comprehensive income (loss)	$ (7,825)	$ 3,092	$ (15,383)	$ 4,518