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Commitments and Contingencies - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 29, 2018
Dec. 30, 2017
Commitments And Contingencies Disclosure [Abstract]    
Rent expense $ 1.2 $ 1.1
Lease expiration date Feb. 28, 2022  
Royalties pay equivalent to Percentage of sales 5.00%  
Royalty expense $ 0.3 $ 0.3
Early termination date of certain license agreement 2018  
Late termination date of certain license agreement 2021