Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 25, 2021	Dec. 26, 2020	Dec. 28, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 108,849	$ 118,917	$ 67,983
Available-for-sale marketable securities
Unrealized holding gains (losses) arising during period (Net of deferred taxes of $630, $706 and $498, respectively)	(1,599)	1,806	1,255
Reclassification adjustment for (gains) losses included in net income (Net of deferred taxes of $0, $0 and $14, respectively)			(37)
Other comprehensive income gain (loss), net of tax	(1,599)	1,806	1,218
Comprehensive income, net of tax	$ 107,250	$ 120,723	$ 69,201