Derivative Instruments and Hedging Activities (Effect on Consolidated Statements of Operations) (Details) - Derivatives designated as hedging instruments - Foreign currency contracts - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Other comprehensive income
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in other comprehensive income (effective portion), net of taxes	$ (221)	$ (295)	$ (888)	$ (443)
Selling, general & administrative expenses
Derivative Instruments, Gain (Loss) [Line Items]
Amounts reclassified from AOCI into results of operations (effective portion), net of taxes	$ 736	$ 289	$ 1,122	$ 516