Acquisition of Business (Narrative) (Details) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012	Jun. 25, 2011
Acquisition of Business
Business Acquisition, Effective Date of Acquisition		Jun. 11, 2012
Number of stores acquired		3
Revenue recognized from newly acquired business	$ 2,000,000
Purchase price		6,116,000	0
Business Combination, Bargain Purchase, Gain Recognized, Amount		$ 414,000	$ 0