Acquisitions (Details) (Pawn Partners, Inc. [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012 store
Pawn Partners, Inc. [Member]
Business Acquisition [Line Items]
Date of acquisition	November 22, 2011
Number of stores acquired	7
Acquisition costs	$ 0.1
Aggregate consideration cash paid for acquisition	52.8
Additional consideration paid for acquisition	3.6
Goodwill arising from acquisition	$ 26.7