Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 24, 2022	Sep. 25, 2021	Sep. 24, 2022	Sep. 25, 2021
Net income	$ 24,882	$ 23,733	$ 75,219	$ 146,436
Other comprehensive loss, net of tax:
Foreign currency translation adjustments	(22,520)	(5,206)	(43,960)	(12,562)
Adjustments related to postretirement benefits	(129)	44	(302)	15
Change in unrealized gain/loss on investments	(372)	(11)	(882)	(25)
Reclassifications due to sale of PCB Test business	0	0	0	(2,515)
Other comprehensive loss, net of tax	(23,021)	(5,173)	(45,144)	(15,087)
Comprehensive income	$ 1,861	$ 18,560	$ 30,075	$ 131,349