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v3.25.3

Servicing - Additional Information (Detail) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2025 USD ($) Strata Loan | Sep. 30, 2024 USD ($) | Dec. 31, 2024 USD ($)
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items] |  |  |
Valuation allowance | $ 459 |  | $ 97
1-4 Family Real Estate Loans [Member] |  |  |
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items] |  |  |
Loans serviced for others unpaid principal amount | 362,800 | $ 366,000 | 364,300
Capitalized service right assets included in other assets | 3,600 | 3,500 | 3,500
Fair value of the capitalized servicing rights | $ 4,700 | $ 5,200 | $ 4,800
Prepayment rate | 8.70% | 7.20% | 8.10%
Number of strata which included loan | Strata | 2 |  |
Number of loans | Loan | 3,620 |  |
Discount yield | 5.43% |  |
Valuation allowance | $ 5 |  | $ 2
Agricultural Real Estate Loans [Member] |  |  |
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items] |  |  |
Loans serviced for others unpaid principal amount | 152,300 | $ 140,300 | 141,900
Capitalized service right assets included in other assets | 2,400 | 2,200 | 2,200
Fair value of the capitalized servicing rights | $ 2,000 | $ 2,700 | $ 2,700
Prepayment rate | 0.715% | 0.156% | 0.184%
Number of strata which included loan | Strata | 14 |  |
Number of loans | Loan | 652 |  |
Discount yield | 8.16% |  |
Valuation allowance | $ 454 |  | $ 95
Two 1-4 Family Real Estate Strata [Member] |  |  |
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items] |  |  |
Number of loans | Loan | 73 |  |

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