Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
	Mar. 29, 2015	Mar. 30, 2014	Mar. 31, 2013
Net income	$ 11,703,000	$ 8,327,000	$ 7,468,000
Other comprehensive loss, net of deferred income taxes:
Unrealized losses on marketable securities	(102,000)	(180,000)	(168,000)
Other comprehensive loss	(102,000)	(180,000)	(168,000)
Comprehensive income	$ 11,601,000	$ 8,147,000	$ 7,300,000