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Long-Term Debt and Capital Lease Obligations - Secured Notes Consolidated from VIEs (Details)
12 Months Ended
Sep. 30, 2015
USD ($)
Sep. 30, 2014
agreement
Dec. 31, 2014
USD ($)
Oct. 31, 2014
USD ($)
Jun. 30, 2014
USD ($)
Mar. 31, 2014
USD ($)
Oct. 31, 2013
USD ($)
Grupo Finmart [Member]              
Debt Instrument [Line Items]              
Number of asset securitization agreements | agreement   3          
VIE C [Member] | 17% Notes due May 2015 [Member]              
Debt Instrument [Line Items]              
Debt, face amount             $ 9,300,000.0
Stated interest rate             17.00%
Monthly payment $ 400,000            
VIE C [Member] | 15% Notes due October 2016 [Member]              
Debt Instrument [Line Items]              
Debt, face amount             $ 10,000,000.0
Stated interest rate             15.00%
Monthly payment 300,000            
VIE B [Member] | 11% Notes due April 2017 [Member]              
Debt Instrument [Line Items]              
Debt, face amount           $ 16,000,000.0  
Stated interest rate           11.00%  
Monthly payment 200,000            
VIE B [Member] | 11% Notes due July 2017 [Member]              
Debt Instrument [Line Items]              
Debt, face amount         $ 16,500,000.0    
Stated interest rate         11.00%    
Monthly payment 200,000            
VIE B [Member] | 11% Notes due October 2017 [Member]              
Debt Instrument [Line Items]              
Debt, face amount       $ 43,800,000.0      
Stated interest rate       11.00%      
Monthly payment 600,000            
VIE B [Member] | 11% Notes due December 2017 [Member]              
Debt Instrument [Line Items]              
Debt, face amount     $ 21,900,000.0        
Stated interest rate     11.00%        
Monthly payment 300,000            
VIE A [Member] | 14.5% Notes due October 2017 [Member]              
Debt Instrument [Line Items]              
Debt, face amount         $ 21,800,000.0    
Stated interest rate         14.50%    
Monthly payment $ 200,000