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Mortgage Servicing Rights (Tables)
 9 Months Ended
Sep. 30, 2025
Transfers and Servicing of Financial Assets [Abstract]  
Schedule of Changes in Mortgage Servicing Rights
Changes in the Company’s mortgage servicing rights were as follows for the three and nine months ended September 30, 2025 and 2024:
Three Months Ended September 30,Nine Months Ended September 30,
 202520242025 2024 
Carrying value at beginning of period$153,464 $164,505 $162,038 $164,249 
Capitalization849 1,418 2,498 4,067 
Change in fair value:
    Due to payoffs/paydowns
(3,438)(3,518)(9,703)(10,067)
    Due to change in valuation inputs or assumptions(1,035)(5,308)(4,993)(1,152)
        Carrying value at end of period$149,840 $157,097 $149,840 $157,097 
Schedule of Servicing Income and Expense Included in Mortgage Banking Income
The following table summarizes servicing income and expense, which are included in mortgage banking income and other noninterest expense, respectively, in the consolidated statements of income for the three and nine months ended September 30, 2025 and 2024: 
 Three Months Ended September 30,Nine Months Ended September 30,
 202520242025 2024 
   Servicing income$6,836 $7,244 $20,849 $21,907 
   Change in fair value of mortgage servicing rights(4,473)(8,826)(14,696)(11,219)
   Change in fair value of derivative hedging instruments1,083 4,336 4,006 (648)
Servicing income
3,446 2,754 10,159 10,040 
Servicing expenses1,409 1,732 4,974 5,612 
          Net servicing income
$2,037 $1,022 $5,185 $4,428 
Schedule of Data and Key Economic Assumptions Related to Mortgage Servicing Rights
Data and key economic assumptions, as well as the valuation's sensitivity to interest rate fluctuations, related to the Company’s mortgage servicing rights as of September 30, 2025 and December 31, 2024 are as follows: 
 September 30,December 31,
 20252024
Unpaid principal balance of mortgage loans sold and serviced for others$9,716,824 $10,235,048 
Weighted-average prepayment speed (CPR)6.51%6.04%
Estimated impact on fair value of a 10% increase$(4,133)$(4,213)
Estimated impact on fair value of a 20% increase$(7,972)$(8,168)
Discount rate9.65%10.2%
Estimated impact on fair value of a 100 bp increase$(7,000)$(7,515)
Estimated impact on fair value of a 200 bp increase$(13,416)$(14,397)
Weighted-average coupon interest rate3.64%3.59%
Weighted-average servicing fee (basis points)2727
Weighted-average remaining maturity (in months)337336