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Description of Business and Significant Accounting Policies (Narrative) (Details) | 9 Months Ended
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Sep. 28, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Entity Incorporation, Date of Incorporation | Nov. 13, 1973
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 2019 is a 52-week period ending on December 28, 2019, with quarterly periods ending on March 30, June 29 and September 28, 2019. Fiscal year 2018 was a 52-week period ending on December 29, 2018, with quarterly periods ending on March 31, June 30 and September 29, 2018.
Year Founded | 1973

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