CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 30, 2018	Dec. 31, 2017	Dec. 30, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 21,606	$ (68,241)	$ 87,826	$ (32,847)
Other comprehensive income (loss), net of taxes:
Currency translation adjustments	(556)	597	(3,554)	3,229
Change in net unrealized gain (loss) on investments, net of tax	2,376	(893)	2,677	(682)
Actuarial gain on post-employment and post-retirement benefit plans, net of tax	270	0	270	0
Total other comprehensive income (loss)	2,090	(296)	(607)	2,547
Comprehensive income (loss)	$ 23,696	$ (68,537)	$ 87,219	$ (30,300)