Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 26, 2016	Mar. 28, 2015	Mar. 29, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, accumulated other comprehensive loss	$ (2,110)	$ (886)	$ (919)
Foreign currency translation	294
Unrealized gain (loss) on marketable securities	(24)	107	(31)
Actuarial gain (loss) on pension plan	2,660	(1,625)
Reclassification of actuarial loss to net income	49
Tax effect	(537)	294	64
Ending balance, accumulated other comprehensive loss	332	(2,110)	(886)
Foreign Currency [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, accumulated other comprehensive loss	(770)	(770)	(770)
Foreign currency translation	294
Ending balance, accumulated other comprehensive loss	(476)	(770)	(770)
Unrealized Gains (Losses) on Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, accumulated other comprehensive loss	(47)	(116)	(149)
Unrealized gain (loss) on marketable securities	(24)	107	(31)
Tax effect	9	(38)	64
Ending balance, accumulated other comprehensive loss	(62)	(47)	$ (116)
Actuarial Gains (Losses) on Pension Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, accumulated other comprehensive loss	(1,293)
Actuarial gain (loss) on pension plan	2,660	(1,625)
Reclassification of actuarial loss to net income	49
Tax effect	(546)	332
Ending balance, accumulated other comprehensive loss	$ 870	$ (1,293)