Other Income (Expense), Net (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011
Other Income and Expenses [Abstract]
Interest expense	$ (16)	$ (24)	$ (78)	$ (145)
Interest income	89	47	206	108
Other income (expense), net	$ 73	$ 23	$ 128	$ (37)