Segment Information (Income) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 03, 2016	Dec. 28, 2014	Jan. 03, 2016	Dec. 28, 2014
Segment Reporting Information [Line Items]
Income from continuing operations, before income taxes	$ 28,623	$ 32,932	$ 110,812	$ 75,038
Unallocated expenses
Segment Reporting Information [Line Items]
Amortization of intangible assets	(2,732)	(1,347)	(4,315)	(5,572)
Inventory fair market value adjustment	(890)	0	(890)	0
Assets impairment and recoveries	0	0	(119)	(2,703)
Stock-based compensation expense	(9,462)	(5,875)	(25,878)	(16,562)
Severance, retention and facility closure costs	(6,092)	(338)	(9,060)	(1,250)
Acquisition-related costs and other	(2,649)	0	(2,649)	0
Deferred compensation plan expense (income), net	(3)	125	0	125
Proceeds from life insurance policies	0	25	0	8
Interest income (expense) and other, net	(2,035)	954	1,201	1,778
Communications | Operating Segments
Segment Reporting Information [Line Items]
Income from continuing operations, before income taxes	35,238	29,315	85,588	88,864
Computing, Consumer and Industrial | Operating Segments
Segment Reporting Information [Line Items]
Income from continuing operations, before income taxes	$ 17,248	$ 10,073	$ 66,934	$ 10,350