Restatement of Consolidated Financial Statements (Details)	12 Months Ended		15 Months Ended
	Sep. 30, 2016	Sep. 30, 2014 asset_sale	Dec. 31, 2014 transfer
Grupo Finmart
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Number of structured asset sales		5	6
Unsecured Long Term Consumer Loans - In Payroll
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Reserve on past due loans, percent	100.00%
Unsecured Long Term Consumer Loans - In Payroll | Grupo Finmart
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Reserve on past due loans, percent	100.00%	100.00%
Number of days past due that 100% reserve is placed	180 days	180 days