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Debt (Details) - USD ($)
$ in Thousands
Jun. 27, 2020
Dec. 28, 2019
Debt Disclosure [Abstract]    
PPP Loan (1) $ 4,925 $ 0
Revolving Credit Facility (2) 1,445 0
Total debt 6,370 0
Amount due within one year 2,212 0
Total long-term debt $ 4,158 $ 0