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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jul. 01, 2022	Jun. 30, 2023	Jul. 01, 2022
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 6,064	$ 13,038	$ 8,774	$ 22,640
Defined benefit plans:
Net change in plan assets	(547)	2,593	(1,724)	6,661
Reclassification into other income (expense), net	(51)	33	(103)	85
Investments available for sale:
Change in unrealized gain (loss)	(142)		(26)
Reclassification into other income (expense), net			(2)
Foreign currency translation gain (loss)	(1,342)	(1,502)	(1,471)	(2,516)
Tax effect	498	188	649	67
Other comprehensive income (loss), net of tax	(1,584)	1,312	(2,677)	4,297
Comprehensive income	$ 4,480	$ 14,350	$ 6,097	$ 26,937

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