Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 25, 2017	Mar. 26, 2016	Mar. 28, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, accumulated other comprehensive loss	$ 332	$ (2,110)
Foreign currency translation (gain) loss	(826)	294
Unrealized (gain) loss on marketable securities	47	(24)	$ 107
Actuarial (gain) loss on pension plan	(79)	2,660	(1,625)
Reclassification of actuarial (gain) loss to net income	(89)	49
Tax effect	42	(537)
Ending balance, accumulated other comprehensive loss	(573)	332	(2,110)
Foreign Currency [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, accumulated other comprehensive loss	(476)	(770)
Foreign currency translation (gain) loss	(826)	294
Ending balance, accumulated other comprehensive loss	(1,302)	(476)	(770)
Unrealized Gains (Losses) on Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, accumulated other comprehensive loss	(62)	(47)
Unrealized (gain) loss on marketable securities	47	(24)
Tax effect	(16)	9
Ending balance, accumulated other comprehensive loss	(31)	(62)	(47)
Actuarial Gains (Losses) on Pension Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, accumulated other comprehensive loss	870	(1,293)
Actuarial (gain) loss on pension plan	(79)	2,660
Reclassification of actuarial (gain) loss to net income	(89)	49
Tax effect	58	(546)
Ending balance, accumulated other comprehensive loss	$ 760	$ 870	$ (1,293)