Other Income, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 04, 2015	Jun. 28, 2014	Jul. 04, 2015	Jun. 28, 2014
Other Income and Expenses [Abstract]
Interest income	$ 143	$ 88	$ 306	$ 200
Interest expense	(10)	(10)	(20)	(20)
Other income, net	$ 133	$ 78	$ 286	$ 180