Consolidated Condensed Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 30, 2017	Dec. 24, 2016	Dec. 30, 2017	Dec. 24, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 33,779	$ 122,041	$ 149,991	$ 226,151
Other comprehensive income (loss), before tax
Foreign currency translation gain (loss)	(811)	(500)	2,500	(247)
Unrealized gain (loss) on marketable securities	(842)	40	(794)	31
Actuarial gain (loss) on pension plan	0	(2,646)	792	(2,646)
Reclassification of actuarial gain to net income	0	(27)	0	(80)
Benefit for income taxes	194	461	43	481
Comprehensive income	$ 32,320	$ 119,369	$ 152,532	$ 223,690