Inventories - Components of Inventories (Details) - USD ($) $ in Thousands	Jul. 02, 2016	Jan. 02, 2016
Inventory Disclosure [Abstract]
Raw materials	$ 5,267	$ 4,578
Work in process	2,032	1,791
Finished goods	4,842	4,737
Total inventories	$ 12,141	$ 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.