Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	12 Months Ended
	Apr. 03, 2016	Mar. 29, 2015	Mar. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 18,143	$ 19,214	$ 18,094
Unrealized gain (loss) on available-for-sale investments	25	11	(47)
Unrealized gain on post-retirement liability	2	1	109
Total other comprehensive income	27	12	62
Total comprehensive income	$ 18,170	$ 19,226	$ 18,156