Fair Value Measurements, Derivatives and Other - Notes Receivable (Details)	Sep. 27, 2016 USD ($) loan	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Guarantee liability		$ 1,258,000	$ 0
Debt, face amount		280,000,000
Disposed of by Sale | Grupo Finmart
Accounts, Notes, Loans and Financing Receivable [Line Items]
Debt, face amount	$ 5,500,000
Number of debt instruments | loan	2
Payments to acquire notes receivable	$ 31,100,000
Disposed of by Sale | Grupo Finmart | Intercompany payable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Debt, face amount	$ 29,600,000
Number of debt instruments | loan	6
Discount on receivable		900,000
Disposed of by Sale | Grupo Finmart | Secured Debt
Accounts, Notes, Loans and Financing Receivable [Line Items]
Payments to acquire notes receivable	$ 25,300,000
Gross note receivable	$ 24,000,000
Notes receivable interest rate	11.00%
AlphaCredit | Disposed of by Sale | Grupo Finmart
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of debt instruments | loan	2
Term of debt	3 years
Repayment rate, year one	30.00%
Repayment rate, year two	40.00%
Repayment rate, year three	30.00%
AlphaCredit | Disposed of by Sale | Grupo Finmart | Intercompany payable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Debt, face amount	$ 60,200,000
AlphaCredit | Mexican Peso denominated intercompany debt | Disposed of by Sale | Grupo Finmart | Intercompany payable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Debt, face amount	$ 8,200,000
Stated interest rate	7.50%
Effective interest rate	15.00%
AlphaCredit | U.S. Dollar denominated intercompany debt | Disposed of by Sale | Grupo Finmart | Intercompany payable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Debt, face amount	$ 52,000,000
Stated interest rate	4.00%
Effective interest rate	10.00%
Discount on receivable		$ 5,800,000
Minimum | Disposed of by Sale | Grupo Finmart | Intercompany payable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Stated interest rate		19.00%
Minimum | Mexican Peso denominated intercompany debt | Disposed of by Sale | Grupo Finmart | Intercompany payable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Stated interest rate	14.00%
Maximum | Disposed of by Sale | Grupo Finmart | Intercompany payable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Stated interest rate		25.00%
Maximum | Mexican Peso denominated intercompany debt | Disposed of by Sale | Grupo Finmart | Intercompany payable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Stated interest rate	15.00%
Notes receivable, net (including discount of $3.8 million)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Guarantee liability		$ 41,946,000
Maximum Exposure to Loss		41,946,000
Discount		3.8
Prepaid expenses and other current assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Guarantee liability		1,209,000
Maximum Exposure to Loss		0
Non-current notes receivable, net (including discount of $2.9 million)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Guarantee liability		41,119,000
Maximum Exposure to Loss		41,119,000
Discount		2.9
Accounts payable, accrued expenses and other current liabilities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Guarantee liability		(1,258,000)
Maximum Exposure to Loss		0
Accounts payable, accrued expenses and other current liabilities | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Grupo Finmart
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maximum Exposure to Loss		$ 25,300,000