Summary of Significant Accounting Policies - Accounting Policies Associated with Discontinued Operations (Details) - Unsecured Long Term Consumer Loans - In Payroll	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Reserve on past due loans, percent	100.00%
Grupo Finmart
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [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