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Servicing - Additional Information (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 USD ($) Loan Strata | Mar. 31, 2023 USD ($) | Dec. 31, 2023 USD ($)
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items] |  |  |
Valuation Allowance |  |  | $ 7
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 | $ 363,600 | $ 370,200 | 367,800
Capitalized service right assets included in other assets | 3,400 |  | 3,500
Fair value of the capitalized servicing rights | $ 5,500 | $ 5,800 | $ 5,500
Prepayment rate | 5.40% | 5.70% | 6.30%
Number of strata which included loan | Strata | 2 |  |
Number of loans | Loan | 3,705 |  |
Discount yield | 6.22% |  |
Valuation Allowance | $ 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 | 133,800 | $ 136,300 | $ 135,800
Capitalized service right assets included in other assets | 2,100 |  | 2,200
Fair value of the capitalized servicing rights | $ 2,100 | $ 1,500 | $ 2,200
Number of strata which included loan | Strata | 11 |  |
Number of loans | Loan | 588 |  |
Discount yield | 9.17% |  |
Valuation Allowance | $ 5 |  |
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 | 92 |  |
Eleven Agricultural 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 | 38 |  |

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- Definition Amount of increase (decrease) in the amortized amount from a decrease (increase) in the valuation allowance applied to the servicing asset for a contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a)(5) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481229/860-50-50-4 + Details
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