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Nature of Operations and Summary of Significant Accounting Policies - Changes in the Allowance for Doubtful Accounts (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 28, 2019
Dec. 29, 2018
Dec. 30, 2017
Accounts Receivable, Allowance for Credit Loss [Roll Forward]      
Balance at Beginning of Year $ 2,897 $ 2,879 $ 2,395
Provision charged to expense 114 355 436
Accounts written off (263) (165) (159)
Currency translation (50) (172) 207
Balance at End of Year $ 2,698 $ 2,897 $ 2,879