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Accounts Receivable Trade, Net - Schedule of Accounts, Notes, Loans and Financing Receivable (Details) - USD ($)
$ in Thousands
Dec. 28, 2018
Dec. 29, 2017
Accounts Receivable [Line Items]    
Total accounts receivable trade, gross $ 26,496 $ 20,384
Less allowance for doubtful accounts 550 349
Less allowance for sales returns [1] 2,895 2,182
Total accounts receivable trade, net 25,946 17,853
US    
Accounts Receivable [Line Items]    
Total accounts receivable trade, gross 807 804
Foreign    
Accounts Receivable [Line Items]    
Total accounts receivable trade, gross $ 25,689 $ 19,580
[1] For 2017, recognized in accounts receivable trade, net on the Consolidated Balance Sheets