Condensed Statements of Comprehensive Loss (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Apr. 01, 2011
Net (loss) income	$ (2,468)	$ 1,817
Net foreign currency translation adjustment, net of taxes:
Foreign currency translation adjustment, net of taxes	5	152
Release of foreign currency translation gains, net of taxes		(2,542)
Subtotal	5	(2,390)
Net unrealized gain (loss) on marketable securities, net of taxes	307	(782)
Comprehensive loss	(2,156)	(1,355)
Comprehensive loss attributable to non-controlling interest	580
Comprehensive loss, net of taxes	$ (1,576)	$ (1,355)