Acquired Intangible Assets - Components of Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Apr. 02, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of acquired intangibles	$ 1,373	$ 1,530	$ 1,376
Cost of Sales
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of acquired intangibles	977	1,133	1,140
Selling, service and administration
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of acquired intangibles	208	209	36
Research, development and engineering
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of acquired intangibles	$ 188	$ 188	$ 200