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Nature of Operations and Summary of Significant Accounting Policies - Warranty Obligations (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 30, 2019
Mar. 31, 2018
Changes in the carrying amount of accrued warranty costs [Roll Forward]    
Balance at Beginning of Year $ 5,726 $ 5,498
Provision charged to expense 1,076 715
Usage (925) (364)
Acquisition 295 0
Currency translation (3) 61
Balance at End of Period $ 6,169 $ 5,910