CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 29, 2014	Jun. 30, 2013
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 21,843	$ (2,264)
Other comprehensive income (loss), net of taxes:
Currency translation adjustments, net of tax	330	(209)
Change in net unrealized gain (loss) on investments, net of tax	431	(730)
Actuarial loss on post-employment and post-retirement benefit plans, net of tax	(2)	(2)
Total other comprehensive income (loss)	759	(941)
Comprehensive income (loss)	$ 22,602	$ (3,205)