Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014	Sep. 29, 2013
Net income (loss)	$ 537	$ (412)	$ 4,918	$ (13,487)
Other comprehensive income (loss)
Changes in foreign currency translation adjustments	(1,287)	368	(1,770)	235
Changes in unrealized investment loss	0	0	0	(29)
Other comprehensive income (loss)	(1,287)	368	(1,770)	206
Comprehensive income (loss)	$ (750)	$ (44)	$ 3,148	$ (13,281)