Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Statement of Other Comprehensive Income [Abstract]
Net income	$ 18,094	$ 17,126	$ 22,685
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on available-for-sale investments	(47)	12	(4)
Unrealized gain on post-retirement liability	109	5	26
Total other comprehensive income	62	17	22
Other comprehensive income, net of tax	$ 18,156	$ 17,143	$ 22,707