Restructuring (Provision of Charges and Liability) (Details) - Employee Severance - USD ($) $ in Thousands	1 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2015	Jan. 03, 2016	Mar. 29, 2015
Restructuring Reserve
Balance as of March 29, 2015		$ 10,512
Provision		8,910
Payments and other adjustments		(10,854)
Balance as of January 3, 2016		8,568	$ 10,512
Zentrum Mikroelektronik Dresden AG
Restructuring Reserve
Balance as of March 29, 2015		295
Provision	$ 4,500	8,910
Payments and other adjustments		(2,290)
Balance as of January 3, 2016		6,915	295
High-Speed Converter Business
Restructuring Reserve
Balance as of March 29, 2015		10,217
Provision		0	18,300
Payments and other adjustments		(8,564)
Balance as of January 3, 2016		$ 1,653	$ 10,217