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Consolidated Balance Sheet (Parentheticals) - USD ($)
$ / shares in Thousands, $ in Thousands
Sep. 26, 2020
Dec. 28, 2019
Statement of Financial Position [Abstract]    
Allowance for credit losses $ 1,891 $ 1,386
Common Stock, No Par Value $ 0 $ 0
Common Stock Shares Issued 89,893,515 88,089,733