Balance Sheet Detail - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2017	Jan. 01, 2017	Dec. 31, 2017	Jan. 01, 2017	Apr. 02, 2017
Inventories, net
Raw materials	$ 3,643		$ 3,643		$ 2,017
Work-in-process	38,940		38,940		35,192
Finished goods	21,309		21,309		15,079
Total inventories, net	63,892		63,892		52,288
Accounts receivable, net
Accounts receivable, gross	115,252		115,252		94,396
Allowance for returns, price credits and doubtful accounts	(5,551)		(5,551)		(5,084)
Total accounts receivable, net	109,701		109,701		89,312
Property, plant and equipment, net
Total property, plant and equipment, gross	347,433		347,433		329,240
Less: accumulated depreciation	(260,797)		(260,797)		(248,279)
Total property, plant and equipment, net	86,636		86,636		80,961
Other accrued liabilities
Accrued restructuring costs	3,274		3,274		4,841
Other	19,249		19,249		15,364
Total other accrued liabilities	22,523		22,523		20,205
Other long-term obligations
Deferred compensation related liabilities	16,469		16,469		15,024
Other	9,819		9,819		3,870
Total other long-term liabilities	26,288		26,288		18,894
Depreciation expense	6,200	$ 4,700	19,395	$ 14,940
Land
Property, plant and equipment, net
Total property, plant and equipment, gross	11,535		11,535		11,535
Machinery and equipment
Property, plant and equipment, net
Total property, plant and equipment, gross	285,412		285,412		268,683
Building and leasehold improvements
Property, plant and equipment, net
Total property, plant and equipment, gross	$ 50,486		$ 50,486		$ 49,022