Annual report pursuant to Section 13 and 15(d)

Securitization of Receivables - Schedule of Fair Values of Retained Interests, Discount Rates Used in Valuing Interests (Detail)

v2.4.0.8
Securitization of Receivables - Schedule of Fair Values of Retained Interests, Discount Rates Used in Valuing Interests (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Sep. 30, 2012
Minimum [Member]
   
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]    
Discount rate 8.00%  
Maximum [Member]
   
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]    
Discount rate 10.00%  
Servicing [Member]
   
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]    
Amortized cost basis $ 1,281 $ 1,636
Fair value 1,407 1,752
Weighted-average life in years 8 years 8 years
Discount rate 8.00% 8.00%
Fair value that would be decreased based on hypothetical adverse changes in discount rates:    
5% change in discount rate 255 316
10% change in discount rate 418 524
Residual Assets [Member]
   
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]    
Amortized cost basis 4,750 4,344
Fair value 4,863 4,597
Fair value that would be decreased based on hypothetical adverse changes in discount rates:    
5% change in discount rate 1,194 1,215
10% change in discount rate $ 1,842 $ 1,887
Residual Assets [Member] | Minimum [Member]
   
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]    
Weighted-average life in years 6 years 7 years
Discount rate 8.00% 8.00%
Residual Assets [Member] | Maximum [Member]
   
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]    
Weighted-average life in years 19 years 18 years
Discount rate 10.00% 10.00%