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Mortgage Servicing Rights
 3 Months Ended
Mar. 31, 2026
Transfers and Servicing [Abstract]  
Mortgage Servicing Rights Mortgage Servicing Rights
(In Thousands)
There was no valuation adjustment on MSRs during the three months ended March 31, 2026 or 2025.
Changes in the Company’s MSRs were as follows:
20262025
Balance at January 1$65,271 $72,991 
Additions1,788 2,236 
Amortization(2,209)(2,325)
Balance at March 31
$64,850 $72,902 

Data and key economic assumptions related to the Company’s MSRs are as follows as of the dates presented:
March 31, 2026December 31, 2025
Unpaid principal balance$5,627,718 $5,648,033 
Weighted-average prepayment speed (CPR)9.28 %10.90 %
Estimated impact of a 10% increase$(3,002)$(2,953)
Estimated impact of a 20% increase(4,853)(5,719)
Discount rate9.86 %9.85 %
Estimated impact of a 10% increase$(3,499)$(3,199)
Estimated impact of a 20% increase(6,732)(6,195)
Weighted-average coupon interest rate4.62 %4.59 %
Weighted-average servicing fee (basis points)33.81 33.86 
Weighted-average remaining maturity (in years)7.36.8
The movement of mortgage interest rates has an inverse relationship with prepayment speeds and discount rates.
The Company recorded servicing fees of $3,289 and $3,656 for the three months ended March 31, 2026 and 2025, respectively, all of which are included in “Mortgage banking income” in the Consolidated Statements of Income.