CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020
Net income	$ 205,512	$ 176,191
Other comprehensive income, net of tax:
Foreign currency translation adjustment, net of tax of $0, $0	(21,123)	(8,779)
Available-for-sale marketable securities:
Unrealized (losses) gains on marketable securities arising during period, net of tax of $(908), $187, respectively	(3,270)	1,037
Less: Reclassification adjustment for gains included in net income, net of tax of $(123), $(145), respectively	(444)	(515)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Total	(3,714)	522
Defined benefit post-retirement plan:
Amortization of prior service credit, net of tax of $0, $0, respectively	(2)	(2)
Other comprehensive loss	(24,839)	(8,259)
Comprehensive income	$ 180,673	$ 167,932