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Mortgage Servicing Rights (Tables)
 9 Months Ended
Sep. 30, 2016
Transfers and Servicing [Abstract]  
Changes in the Company's MSRs
Changes in the Company’s MSRs were as follows:
 
Balance at January 1, 2016
$
29,642

Sale of MSRs
(18,477
)
Capitalization
12,965

Amortization
(1,965
)
Impairment
(40
)
 
 
Balance at September 30, 2016
$
22,125
Data and key economic assumptions related to the Company's MSRs
Data and key economic assumptions related to the Company’s MSRs as of September 30, 2016 are as follows:
 
Unpaid principal balance
$
2,365,770

 
 
Weighted-average prepayment speed (CPR)
11.27
%
Estimated impact of a 10% increase
$
(976
)
Estimated impact of a 20% increase
(1,880
)
 
 
Discount rate
9.63
%
Estimated impact of a 10% increase
$
(829
)
Estimated impact of a 20% increase
(1,602
)
 
 
Weighted-average coupon interest rate
3.88
%
Weighted-average servicing fee (basis points)
25.84

Weighted-average remaining maturity (in years)
10.13