Allowance for Losses and Credit Quality of Consumer Loans - Schedule of Allowance for Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Unsecured Short-Term Consumer Loans [Member]
Allowance for credit losses and recorded investment in financing receivables
Allowance Balance at Beginning of Period	$ 14,645	$ 2,928	$ 2,390
Charge-offs	(31,428)	(46,968)	(47,178)
Recoveries	16,315	26,865	21,074
Provisions	12,744	31,817	26,651
Translation Adjustment	(778)	3	(9)
Allowance Balance at End of Period	11,498	14,645	2,928
Financing Receivable at End of Period	15,919	31,747	22,289
Secured Short-Term Consumer Loans [Member]
Allowance for credit losses and recorded investment in financing receivables
Allowance Balance at Beginning of Period	1,049	1,804	942
Charge-offs	(47,615)	(64,916)	(43,768)
Recoveries	43,292	58,453	40,226
Provisions	5,278	5,708	4,404
Translation Adjustment	0	0	0
Allowance Balance at End of Period	2,004	1,049	1,804
Financing Receivable at End of Period	2,292	8,173	9,789
Unsecured Long-Term Consumer Loans [Member]
Allowance for credit losses and recorded investment in financing receivables
Allowance Balance at Beginning of Period	38,087	19,849	8,574
Charge-offs	(3,162)	(307)	(289)
Recoveries	255	0	0
Provisions	25,737	19,608	11,982
Translation Adjustment	(10,272)	(1,063)	(418)
Allowance Balance at End of Period	50,645	38,087	19,849
Financing Receivable at End of Period	$ 158,293	$ 162,860	$ 114,871