Quarterly report pursuant to Section 13 or 15(d)

LOAN SALES AND SECURITIZATIONS - Small Business Association Portfolio, MSRs Amortization Method (Details)

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LOAN SALES AND SECURITIZATIONS - Small Business Association Portfolio, MSRs Amortization Method (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Servicing Asset at Amortized Cost, Balance [Roll Forward]          
Fair value, end of period $ 224,656   $ 224,656   $ 225,578
Small Business Association (SBA) Loan          
Servicing Asset at Amortized Cost, Balance [Roll Forward]          
Carrying value, beginning of period 21,399 $ 19,526 21,080 $ 19,747  
New servicing assets created 4,121 1,868 5,596 3,380  
Amortization and other (2,407) (1,782) (3,563) (3,515)  
Carrying value, end of period 23,113 19,612 23,113 19,612  
Fair value, end of period $ 26,853 $ 23,823 $ 26,853 $ 23,823  
Weighted-average life (years) 3 years 4 months 3 years 4 months 3 years 3 months 18 days 3 years 4 months