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Nature of Operations and Summary of Significant Accounting Policies - Warranty Obligations (Details) - USD ($)
$ in Thousands
9 Months Ended
Oct. 01, 2016
Oct. 03, 2015
Changes in the carrying amount of accrued warranty costs [Roll Forward]    
Balance at Beginning of Period $ 3,670 $ 3,875
Provision charged to income 2,454 1,625
Usage (2,574) (1,813)
Acquisition 991 0
Currency translation (19) (226)
Balance at End of Period $ 4,522 $ 3,461