Quarterly report pursuant to Section 13 or 15(d)

Revenue - Summary of Receivables and Deferred Revenue Liabilities from Contract with Customers (Details) (Parentheticals)

v3.19.3
Revenue - Summary of Receivables and Deferred Revenue Liabilities from Contract with Customers (Details) (Parentheticals) - USD ($)
$ in Thousands
Sep. 29, 2019
Dec. 30, 2018
Revenue From Contract With Customer [Abstract]    
Allowance for doubtful accounts $ 170 $ 322