Annual report pursuant to Section 13 and 15(d)

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

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LOAN SALES AND SECURITIZATIONS - Small Business Association, MSRs Amortization Method (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Servicing Asset at Amortized Cost, Balance [Roll Forward]    
Fair value, end of year $ 225,578 $ 189,237
Commercial    
Servicing Asset at Amortized Cost, Balance [Roll Forward]    
Carrying value, beginning of year 19,747 18,536
New servicing assets created 8,705 8,012
Amortization and other (7,372) (6,801)
Carrying value, end of year 21,080 19,747
Fair value, end of year $ 24,270 $ 22,649
Commercial | Sensitivity Analysis Amortization Carrying Method    
Servicing Asset at Amortized Cost, Balance [Roll Forward]    
Weighted-average life (years) 3 years 3 months 18 days 3 years 3 months 18 days