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Goodwill and Other Intangible Assets (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Sep. 30, 2012
Dec. 31, 2011
Sep. 30, 2011
Summary of major class of indefinite-lived intangible asset        
Pawn licenses $ 8,836 $ 8,836 $ 8,836  
Trade name 9,822 9,845 4,870  
Domain name 215 0 0  
Goodwill 428,011 374,663 212,263 173,206
Total $ 446,884 $ 393,344 $ 225,969