Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 25, 2017	Mar. 26, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, accumulated other comprehensive loss	$ (573)	$ 332
Current period foreign exchange translation	2,791	(826)	$ 294
Current period marketable securities activity	(2,380)	47	(24)
Actuarial gain (loss) on defined benefit pension plan	(14,729)	(79)	2,660
Current period amortization of actuarial (gain) loss	0	(89)	49
Tax effect	3,530	42
Ending balance, accumulated other comprehensive loss	(11,361)	(573)	332
Foreign Currency
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, accumulated other comprehensive loss	(1,302)	(476)
Current period foreign exchange translation	2,791	(826)
Current period marketable securities activity	0	0
Actuarial gain (loss) on defined benefit pension plan	0	0
Current period amortization of actuarial (gain) loss	0	0
Tax effect	0	0
Ending balance, accumulated other comprehensive loss	1,489	(1,302)	(476)
Unrealized Gains (Losses) on Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, accumulated other comprehensive loss	(31)	(62)
Current period foreign exchange translation	0	0
Current period marketable securities activity	(2,380)	47
Actuarial gain (loss) on defined benefit pension plan	0	0
Current period amortization of actuarial (gain) loss	0	0
Tax effect	750	(16)
Ending balance, accumulated other comprehensive loss	(1,661)	(31)	(62)
Actuarial Gains (Losses) on Defined Benefit Pension Plan
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, accumulated other comprehensive loss	760	870
Current period foreign exchange translation	0	0
Current period marketable securities activity	0	0
Actuarial gain (loss) on defined benefit pension plan	(14,729)	(79)
Current period amortization of actuarial (gain) loss	0	(89)
Tax effect	2,780	58
Ending balance, accumulated other comprehensive loss	$ (11,189)	$ 760	$ 870