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Nature of Operations and Summary of Significant Accounting Policies - Warranty Obligations (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 29, 2019
Jun. 30, 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 2,368 1,656
Usage (1,755) (881)
Acquisition 303 0
Currency translation 37 (192)
Balance at End of Period $ 6,679 $ 6,081