Income Taxes - Components of Net Deferred Tax Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015
Current
Inventory valuation and warranty costs	$ 0	$ 10,781
Receivables and other current assets	0	(272)
Payroll-related accruals	0	1,288
Accrued liabilities	0	2,382
Deferred revenue	0	3,368
Other	0	(1,029)
Total current deferred tax assets	0	18,576
Valuation allowance, current	0	(18,571)
Net current deferred tax assets	0	5
Non-current
Deferred tax asset, inventory and warranty, non-current	11,524	0
Deferred Tax Assets Receivables and other non-current assets	(91)	0
Deferred compensation	6,035	4,704
Intangible assets and investments	865
Non-current deferred tax liabilities, Intangible assets and investments		1,677
Accrued liabilities	1,626	454
Non-current deferred income taxes, net	1,746	0
Property, plant and equipment	5,220	5,187
Other comprehensive income	219
Deferred Tax Liabilities, Other Comprehensive Income		(112)
Tax loss and credit carryforwards	67,630	59,137
Deferred Tax Assets, Other	(219)	1,049
Total non-current deferred tax asset	94,555	68,742
Valuation allowance, non-current	(93,875)	(69,011)
Net non-current deferred tax assets	680
Deferred Tax Liabilities, Net of Allowance, Noncurrent		(269)
Total deferred tax assets	94,555	87,318
Total valuation allowance	(93,875)	(87,582)
Net deferred tax assets	680
Increase in valuation allowance	$ (6,300)
Deferred Tax Liabilities, Net		$ (264)