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Intangible Assets (Tables)
12 Months Ended
Jan. 02, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]
               

January 2, 2021

 
    Cost    

Accumulated amortization

    Net book value  
    $     $     $  
Customer relationships   189,407     56,090     133,317  
Patents, trademarks and other   1,919     1,919      
    191,326     58,009     133,317  
 
                December 28, 2019  
    Cost    

Accumulated amortization

    Net book value  
    $     $     $  
Customer relationships   189,407     47,169     142,238  
Patents, trademarks and other   1,919     1,894     25  
    191,326     49,063     142,263  
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
      2021       2022       2023       2024       2025       Thereafter       Total  
      $       $       $       $       $       $       $  
Amortization expense     8,777       8,777       8,777       8,777       8,777       89,432       133,317