Quarterly report pursuant to Section 13 or 15(d)

LOAN SALES AND SECURITIZATIONS - Automobile Loans, MSRs Amortization Method (Details)

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LOAN SALES AND SECURITIZATIONS - Automobile Loans, MSRs Amortization Method (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Servicing Asset at Amortized Cost, Balance [Roll Forward]      
Fair value, end of period $ 227,678   $ 225,578
Automobile      
Servicing Asset at Amortized Cost, Balance [Roll Forward]      
Carrying value, beginning of period 18,285 $ 8,771  
New servicing assets created 0 0  
Amortization and other (3,126) (1,742)  
Fair value, end of period 15,278 7,250  
Carrying value, end of period $ 15,159 $ 7,029  
Automobile | Amortization method      
Servicing Asset at Amortized Cost, Balance [Roll Forward]      
Weighted-average life (years) 4 years 3 years 4 months