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Organization and Description of Business and Accounting Policies - Summary of Estimated Sales Return (Details) - USD ($)
$ in Thousands
Dec. 28, 2018
Dec. 29, 2017
Accounting Policies [Abstract]    
Estimated returns - inventory [1] $ 722 $ 534
Allowance for sales returns [2] $ 2,895 $ 2,182
[1] Recognized in inventories, net on the Consolidated Balance Sheets
[2] For 2017, recognized in accounts receivable trade, net on the Consolidated Balance Sheets