CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2023	Dec. 30, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 21,347	$ 39,665	$ 27,511
Defined benefit plans:
Net change in plan assets	(3,946)	6,509	2,632
Reclassification into other income (expense), net	(357)	187	487
Investments available for sale:
Change in unrealized gain (loss)	363	(406)
Foreign currency translation loss	(1,095)	(2,090)	(1,776)
Tax effect	766	4	154
Other comprehensive income (loss), net of tax	(4,269)	4,204	1,497
Comprehensive income	$ 17,078	$ 43,869	$ 29,008