Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Oct. 02, 2011	Sep. 30, 2012	Oct. 02, 2011
Net earnings (loss)	$ 7,203	$ 704	$ (272,409)	$ (9,170)
Other comprehensive income (loss):
Foreign currency translation adjustments	2,966	(11,583)	931	(3,998)
Unrealized gain (loss) on investments	35	(5)	46	(16)
Amortization of benefit plan costs	(2,119)	563	(6,356)	1,746
Income tax on other comprehensive income	(11)	(251)	(14)	(617)
Total other comprehensive income (loss)	871	(11,276)	(5,393)	(2,885)
Total comprehensive loss	$ 8,074	$ (10,572)	$ (277,802)	$ (12,055)