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Other Expense, Net (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 03, 2021
Jun. 27, 2020
Jul. 03, 2021
Jun. 27, 2020
Other Income And Expenses [Line Items]        
Impairment of long-lived assets $ 2,962 $ 0 $ 2,962 $ 0
Employee termination costs (recovery) 1,161 (377) 1,161 193
Reversal of previously recognized stock-based compensation expense related to forfeited awards   400   900
Loss on the settlement of employment-related legal matter $ 500   $ 500  
Value Creation Plan [Member]        
Other Income And Expenses [Line Items]        
Employee termination costs (recovery)   $ 100   $ 1,100