Acquisition of Business (Narrative) (Details) (USD $)	3 Months Ended	9 Months Ended
	Sep. 29, 2012	Sep. 29, 2012
Acquisition of Business
Business Acquisition, Effective Date of Acquisition		Jun. 11, 2012
Number of stores acquired		3
Revenue recognized from newly acquired business	$ 9,700,000	$ 11,700,000
Purchase price		6,116,000
Business Combination, Bargain Purchase, Gain Recognized, Amount		$ 414,000