Business Combination (Narrative) (Details) - USD ($) $ in Thousands		1 Months Ended	3 Months Ended		9 Months Ended
	Dec. 07, 2015	Jan. 03, 2016	Jan. 03, 2016	Dec. 28, 2014	Jan. 03, 2016	Dec. 28, 2014
Business Acquisition [Line Items]
Revenues			$ 177,610	$ 151,160	$ 508,015	$ 414,555
Net income			32,545	$ 18,358	113,126	$ 54,643
Zentrum Mikroelektronik Dresden AG
Business Acquisition [Line Items]
Escrow deposit	$ 20,000
Cash paid for acquisition	$ 307,000
Revenues			3,400
Selling, General and Administrative Expenses | Zentrum Mikroelektronik Dresden AG
Business Acquisition [Line Items]
Acquisition-related costs and other			2,100
Bank loans | Zentrum Mikroelektronik Dresden AG
Business Acquisition [Line Items]
Liabilities assumed		$ 9,400	9,400		9,400
Repayment of debt		9,200
Long-term debt		$ 200	$ 200		$ 200
Developed technology | Zentrum Mikroelektronik Dresden AG
Business Acquisition [Line Items]
Fair value, discount rate	13.50%
Customer relationships | Zentrum Mikroelektronik Dresden AG
Business Acquisition [Line Items]
Fair value, discount rate	13.50%
Backlog | Zentrum Mikroelektronik Dresden AG
Business Acquisition [Line Items]
Fair value, discount rate	5.40%
Trademarks | Zentrum Mikroelektronik Dresden AG
Business Acquisition [Line Items]
Fair value, discount rate	13.50%