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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