Deferred Income on Shipments to Distributors (Components) (Details) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2017	Apr. 02, 2017
Deferred Revenue Arrangement [Line Items]
Gross deferred revenue	$ 4,509	$ 2,335
Gross deferred costs	(988)	(350)
Deferred income on shipments to distributors	$ 3,521	$ 1,985
Maximum
Deferred Revenue Arrangement [Line Items]
Discount from list price billed to the customer (percent)	39.00%