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Mortgage Servicing Rights (Tables)
 6 Months Ended
Jun. 30, 2014
Transfers and Servicing [Abstract]  
Changes in the Company's mortgage servicing rights
Changes in the Company’s mortgage servicing rights were as follows:
 
Balance at January 1, 2014
$
8,994

Capitalization
1,875

Amortization
(589
)
 
 
Balance at June 30, 2014
$
10,280
Data and key economic assumptions related to the Company's mortgage servicing rights
Data and key economic assumptions related to the Company’s mortgage servicing rights as of June 30, 2014 are as follows:
 
Unpaid principal balance
$
1,029,444

 
 
Weighted-average prepayment speed (CPR)
5.36
%
Estimated impact of a 10% increase
$
(931
)
Estimated impact of a 20% increase
(1,236
)
 
 
Discount rate
11.26
%
Estimated impact of a 10% increase
$
(959
)
Estimated impact of a 20% increase
(1,286
)
 
 
Weighted-average coupon interest rate
3.77
%
Weighted-average servicing fee (basis points)
25.09

Weighted-average remaining maturity (in years)
24.33