CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 27, 2015	Sep. 28, 2014	Sep. 27, 2015	Sep. 28, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 42,423	$ 14,442	$ 80,581	$ 36,285
Other comprehensive income (loss), net of taxes:
Currency translation adjustments, net of tax	(1,814)	(1,585)	(1,004)	(1,255)
Change in net unrealized gain (loss) on investments, net of tax	232	(448)	(678)	(16)
Actuarial loss on post-employment and post-retirement benefit plans, net of tax	(465)	(2)	(611)	(5)
Total other comprehensive loss	(2,047)	(2,035)	(2,293)	(1,276)
Comprehensive income	$ 40,376	$ 12,407	$ 78,288	$ 35,009