Goodwill and Intangible Assets (Details Textual) - USD ($) $ in Thousands	6 Months Ended
	Jul. 04, 2015	Jun. 28, 2014	Jan. 03, 2015	[1]
Goodwill And Intangible Assets Disclosure [Abstract]
Carrying value of goodwill	$ 533		$ 533
Amortization expense	$ 8	$ 36

[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 3, 2015.