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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 02, 2021
Jul. 03, 2020
Jul. 02, 2021
Jul. 03, 2020
Statement Of Income And Comprehensive Income [Abstract]        
Net income (loss) $ 8,567 $ (1,172) $ 13,559 $ (1,306)
Defined benefit plans:        
Net change in plan assets (457) (28) 2,627 (53)
Reclassification into other income (expense), net 120 72 240 142
Foreign currency translation gain (loss) (111) 113 (1,227) 86
Tax effect 69 (40) 69 (36)
Other comprehensive income (loss), net of tax (379) 117 1,709 139
Comprehensive income (loss) $ 8,188 $ (1,055) $ 15,268 $ (1,167)