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Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 28, 2019
Sep. 29, 2018
Sep. 28, 2019
Sep. 29, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance $ (12,835) $ 12,356 $ (14,663) $ 35,002
Other comprehensive income, net of tax (1,850) 201 (2,028) 602
Other (7) 0 9 0
Ending balance (20,571) 2,224 (20,571) 2,224
Total Accumulated Other Comprehensive Loss        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance (37,307) (36,106) (37,129) (36,507)
Ending balance (39,157) $ (35,905) (39,157) $ (35,905)
Foreign currency, net of tax        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance     660  
Other comprehensive income, net of tax     (2)  
Ending balance 658   658  
Defined benefit pension plan, net of tax        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance     (38,001)  
Other comprehensive income, net of tax     (2,035)  
Ending balance (40,036)   (40,036)  
Other, net of tax        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance     212  
Other     9  
Ending balance $ 221   221  
Accumulated defined benefit plan adjustment, net gain (loss) attributable to parent        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Reclassification of actuarial loss     2,700  
Reclassification of actuarial loss, tax     $ 700