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Nature of Operations and Summary of Significant Accounting Policies - Warranty Obligations (Details) - USD ($)
$ in Thousands
9 Months Ended
Oct. 03, 2015
Sep. 27, 2014
Changes in the carrying amount of accrued warranty costs [Roll Forward]    
Balance at beginning of period $ 3,875 $ 4,571
Provision 1,625 1,681
Usage (1,813) (2,016)
Currency translation (226) (190)
Balance at end of period $ 3,461 $ 4,046