Accumulated Other Comprehensive Income (Loss) (Changes) (Details) $ in Thousands	9 Months Ended
	Jan. 01, 2017 USD ($)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	$ 676,695
Other comprehensive loss before reclassifications	(4,884)
Amounts reclassified out of accumulated other comprehensive loss	342
Net current-period other comprehensive loss	(4,542)
Balance, ending	748,394
Accumulated other comprehensive income (loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	(3,714)
Balance, ending	(8,256)
Cumulative translation adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	(4,001)
Other comprehensive loss before reclassifications	(3,091)
Amounts reclassified out of accumulated other comprehensive loss	0
Net current-period other comprehensive loss	(3,091)
Balance, ending	(7,092)
Unrealized gain (loss) on available-for-sale investments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	222
Other comprehensive loss before reclassifications	(1,793)
Amounts reclassified out of accumulated other comprehensive loss	342
Net current-period other comprehensive loss	(1,451)
Balance, ending	(1,229)
Pension adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	65
Other comprehensive loss before reclassifications	0
Amounts reclassified out of accumulated other comprehensive loss	0
Net current-period other comprehensive loss	0
Balance, ending	$ 65