Stock Buyback (Details) - USD ($)		12 Months Ended
	Apr. 23, 2014	Mar. 27, 2016	Mar. 29, 2015	Mar. 30, 2014
Stock Buyback
Shares repurchased		$ 937,300	$ 6,223,300	$ 1,646,300
Tax withholding for share based compensation		$ 937,300	$ 1,612,900	$ 1,646,300
Stock Buyback Program
Stock Buyback
Stock authorized to purchase on non-accelerated basis	$ 10,000,000
Stock repurchase period	24 months
Number of shares repurchased (in shares)		0	157,954	0
Shares repurchased			$ 4,600,000
Average cost per share (in dollars per share)			$ 29.17
Amount available for repurchase		$ 5,400,000