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Significant Accounting Policies (Narrative) (Details)
 12 Months Ended
Jan. 02, 2021
Significant Accounting Policies [Line Items]  
Operating cycle The fiscal year of the Company consists of a 52- or 53-week period ending on the Saturday closest to December 31. Fiscal year 2020 was a 53-week period ending on January 2, 2021. Fiscal years 2019 and 2018 were each 52-week periods ending on December 28, 2019 and December 29, 2018, respectively. Fiscal year 2021 will be a 52-week period ending on January 1, 2022, with quarterly periods ending on April 3, 2021, July 3, 2021, and October 2, 2021.
Description of trade receivable balance As at January 2, 2021, two long-term customers represented 17% and 11%, respectively, of the Company's consolidated trade receivables balance
Description of threshold limit of income tax positions for those tax positions that meet the more-likely-than-not recognition threshold, the Company recognizes the largest amount of tax benefit that has a greater than 50% likelihood of being realized upon ultimate settlement with the related tax authority
Minimum [Member]  
Significant Accounting Policies [Line Items]  
Finite-Lived Intangible Asset, Useful Life 10 years
Maximum [Member]  
Significant Accounting Policies [Line Items]  
Finite-Lived Intangible Asset, Useful Life 25 years