Quarterly report pursuant to Section 13 or 15(d)

LOAN SALES AND SECURITIZATIONS - Residential Mortgage Portfolio, MSRs Amortization Method (Details)

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LOAN SALES AND SECURITIZATIONS - Residential Mortgage Portfolio, 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
Residential Mortgage      
Servicing Asset at Amortized Cost, Balance [Roll Forward]      
Carrying value, beginning of period 172,466 $ 143,133  
New servicing assets created 9,635 6,109  
Impairment (charge) / recovery 1,800 (16,340)  
Amortization and other (6,089) (5,627)  
Carrying value, end of period 177,812 127,275  
Fair value, end of period $ 178,581 $ 127,516  
Residential Mortgage | Amortization method      
Servicing Asset at Amortized Cost, Balance [Roll Forward]      
Weighted-average life (years) 7 years 1 month 6 years 6 months