CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Sep. 24, 2011	Sep. 29, 2012	Sep. 24, 2011
Net income (loss)	$ (1,749)	$ 3,376	$ (7,082)	$ 15,000
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	2,132	(4,854)	(280)	2,642
Adjustments related to postretirement benefits	33	47	109	65
Change in unrealized gain/loss on investments	13	(14)	12	22
Other comprehensive income (loss), net of tax	2,178	(4,821)	(159)	2,729
Comprehensive income (loss)	$ 429	$ (1,445)	$ (7,241)	$ 17,729