Condensed Consolidated Statements Of Comprehensive (Loss) Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Net (loss) income	$ (14,669)	$ 19,781	$ (357)	$ 36,178
Other comprehensive income (loss), net of tax
Foreign currency translation adjustments	5,346	(4,823)	5,830	(16,420)
Available for sale securities, unrealized loss, net of tax benefit of $367	(644)	0	(644)	0
Pension liability adjustments	(3)	14	19	57
Other comprehensive income (loss)	4,699	(4,809)	5,205	(16,363)
Comprehensive (loss) income	$ (9,970)	$ 14,972	$ 4,848	$ 19,815