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Mortgage Servicing Rights
12 Months Ended
Dec. 31, 2015
Transfers and Servicing [Abstract]  
Mortgage Servicing Rights
Mortgage Servicing Rights
(In Thousands)
Changes in the Company’s mortgage servicing rights were as follows:
Carrying value at January 1, 2015
$
11,662

Additions through acquisition
10,429

Capitalization
10,793

Amortization
(3,242
)
Carrying value at December 31, 2015
$
29,642



Data and key economic assumptions related to the Company’s mortgage servicing rights as of December 31, 2015 are as follows: 
Unpaid principal balance
$
3,090,839

Weighted-average prepayment speed (CPR)
8.89
%
Estimated impact of a 10% increase
$
(1,203
)
Estimated impact of a 20% increase
(2,330
)
 
 
Discount rate
9.51
%
Estimated impact of a 100bp increase
$
(1,357
)
Estimated impact of a 200bp increase
(2,612
)
 
 
Weighted-average coupon interest rate
3.97
%
Weighted-average servicing fee (basis points)
25.04

Weighted-average remaining maturity (in years)
15.23