Annual report pursuant to Section 13 and 15(d)

Nonrecourse Debt - Additional Information (Detail)

v2.4.0.8
Nonrecourse Debt - Additional Information (Detail) (USD $)
 1 Months Ended 1 Months Ended
Jul. 31, 2013
Dec. 31, 2013
Dec. 31, 2013
Asset-Backed Nonrecourse Notes [Member]
Dec. 31, 2013
Asset-Backed Nonrecourse Notes [Member]
Other Assets [Member]
Dec. 31, 2013
Other Nonrecourse Debt [Member]
Debt Instrument [Line Items]          
Nonrecourse Asset-Backed Notes   $ 100,081,000 $ 100,000,000    
Nonrecourse Asset-Backed Notes, interest rate     2.79%    
Non-recourse Asset-Backed Notes, maturity period     2019-12    
Amount of financing receivables pledged for Asset-Backed Notes     109,500,000   156,400,000
Outstanding Notes     100,100,000    
Anticipated debt balance at maturity     57,000,000    
Make whole payment discount rate     0.50%    
Prepayment penalty, maturity date     2018-12    
Cost on issuance of Notes $ 8,600,000     $ 200,000  
Debt issuance cost amortization period       72 months