CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 01, 2017	Jan. 03, 2016	Jan. 01, 2017	Jan. 03, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 34,735	$ 32,545	$ 80,273	$ 113,126
Other comprehensive income (loss), net of taxes:
Currency translation adjustments, net of tax	(1,949)	(1,040)	(3,091)	(2,044)
Change in net unrealized gain (loss) on investments, net of tax	(1,418)	(731)	(1,451)	(1,409)
Change in unrealized loss on post-employment and post-retirement benefit plans, net of tax	0	(2)	0	(613)
Total other comprehensive loss	(3,367)	(1,773)	(4,542)	(4,066)
Comprehensive income	$ 31,368	$ 30,772	$ 75,731	$ 109,060