Balance Sheet Detail (Additional Information) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Jan. 03, 2016	Mar. 29, 2015
Inventories, net
Raw materials	$ 3,663	$ 4,709
Work-in-process	29,228	18,377
Finished goods	21,894	22,324
Total inventories, net	54,785	45,410
Property, plant and equipment, net
Total property, plant and equipment, gross	319,977	351,789
Less: accumulated depreciation	(246,208)	(286,281)
Total property, plant and equipment, net	73,769	65,508
Other accrued liabilities
Accrued restructuring costs	8,568	10,512
Other	7,797	7,070
Total other accrued liabilities	16,365	17,582
Deferred compensation related liabilities	13,822	13,143
Other	8,271	4,462
Total other long-term liabilities	22,093	17,605
High-Speed Converter Business
Other accrued liabilities
Accrued Severance Costs	4,500	10,200
Land
Property, plant and equipment, net
Total property, plant and equipment, gross	11,469	11,578
Machinery and equipment
Property, plant and equipment, net
Total property, plant and equipment, gross	260,313	292,180
Building and leasehold improvements
Property, plant and equipment, net
Total property, plant and equipment, gross	48,195	$ 48,031
Zentrum Mikroelektronik Dresden AG
Other accrued liabilities
Accrued Severance Costs	$ 1,700