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Nature of Operations and Summary of Significant Accounting Policies - Product Warranty (Details) - USD ($)
$ in Thousands
12 Months Ended
Jan. 02, 2016
Jan. 03, 2015
Changes in the carrying amount of accrued warranty costs [Roll Forward]    
Balance at Beginning of Year $ 3,875 $ 4,571
Provision charged to income 2,660 2,075
Usage (2,559) (2,562)
Acquired 0 150
Currency translation (306) (359)
Balance at End of Year $ 3,670 $ 3,875