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16. Notes payable - short term (Details Narrative) - USD ($)
$ in Thousands
9 Months Ended
Sep. 29, 2018
Dec. 30, 2017
Notes Payable - Short Term    
Unsecured promissory notes $ 800  
Debt stated interest rate 1.29%  
Debt maturity date Aug. 18, 2018  
Note payable balance outstanding $ 0 $ 300