Other Income, Net (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Other Income and Expenses [Abstract]
Interest income	$ 106	$ 88	$ 306	$ 284
Interest expense	(10)	(14)	(30)	(41)
Other income, net	$ 96	$ 74	$ 276	$ 243