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Summary of Significant Accounting Policies - Equity Method Investments (Details)
$ in Millions
12 Months Ended
Sep. 30, 2015
USD ($)
Cash Converters International Limited [Member]  
Schedule of Equity Method Investments [Line Items]  
Negative basis in investment $ 11.2
Income from investment, period of lag 3 months
Albemarle and Bond Holdings [Member]  
Schedule of Equity Method Investments [Line Items]  
Income from investment, period of lag 3 months