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Inventories - Components of Inventories (Details) - USD ($)
$ in Thousands
Apr. 02, 2016
Jan. 02, 2016
Inventory Disclosure [Abstract]    
Raw materials $ 4,631 $ 4,578
Work in process 2,146 1,791
Finished goods 4,365 4,737
Total inventories $ 11,142 $ 11,106 [1]
[1] Derived from the audited consolidated financial statements included in the Annual Report on Form 10-K filed with the SEC for the year ended January 2, 2016.