Income Taxes - Components of Net Deferred Tax Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Non-current
Deferred tax asset, inventory and warranty, non-current	$ 7,904	$ 11,246
Deferred Tax Assets Receivables and other non-current assets	(49)	(274)
Deferred compensation	5,130	7,574
Non-current deferred tax liabilities, Intangible assets and investments	(272)	(382)
Accrued liabilities	2,322	3,006
Non-current deferred income taxes, net	821	3,478
Property, plant and equipment	3,142	5,029
Other comprehensive income	3	456
Tax loss and credit carryforwards	43,201	73,805
Deferred Tax Assets, Other		259
Deferred Tax Liabilities, Other	(185)
Total non-current deferred tax asset	62,017	104,197
Valuation allowance, non-current	(18,499)	(103,315)
Net deferred tax assets	43,518	$ 882
Increase in valuation allowance	$ 84,800