Fair Value (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Liabilities included in level 3 representing fair value of contingent consideration associated with acquisitions
Beginning Balance	$ 3,911
Payments	(39)	0	0
Ending Balance	4,218	3,911
Fair Value Measurements, Level 3 [Member]
Liabilities included in level 3 representing fair value of contingent consideration associated with acquisitions
Beginning Balance	3,911	966
Acquisitions		3,521
Payments	(39)
Adjustments	346	(576)
Ending Balance	$ 4,218	$ 3,911

Fair value, as of the acquisition date, of potential payments under the contingent consideration arrangement including cash and shares.

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+ Details