v3.25.2
Loans Receivable and Allowance for Credit Losses (Composition of the Loan Portfolio) (Details) - USD ($)
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Jun. 30, 2024
Mar. 31, 2024
Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total Loans $ 1,791,044,000   $ 1,714,082,000      
Deferred fees, net (470,000)   (444,000)      
Total loans receivable 1,790,574,000   1,713,638,000      
Allowance for credit losses (20,908,000) $ (20,442,000) (19,843,000) $ (17,806,000) $ (18,020,000) $ (18,968,000)
Net loans receivable $ 1,769,666,000   $ 1,693,795,000      
Percent of Loans 100.00%   100.00%      
Residential Real Estate Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total Loans $ 332,631,000   $ 330,856,000      
Allowance for credit losses $ (1,011,000) (1,015,000) $ (1,146,000) (1,131,000) (1,197,000) (1,351,000)
Percent of Loans 18.60%   19.30%      
Commercial Real Estate Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total Loans $ 736,969,000   $ 716,875,000      
Allowance for credit losses $ (11,039,000) (10,585,000) $ (11,406,000) (9,552,000) (9,831,000) (11,871,000)
Percent of Loans 41.10%   41.80%      
Agricultural Real Estate Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total Loans $ 62,077,000   $ 63,488,000      
Percent of Loans 3.50%   3.70%      
Construction Real Estate Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total Loans $ 68,013,000   $ 53,020,000      
Allowance for credit losses $ (1,163,000) (985,000) $ (884,000) (840,000) (831,000) (933,000)
Percent of Loans 3.80%   3.10%      
Commercial Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total Loans $ 229,182,000   $ 211,991,000      
Allowance for credit losses $ (1,933,000) (1,972,000) $ (1,732,000) (2,035,000) (1,987,000) (1,207,000)
Percent of Loans 12.80%   12.40%      
Other Agricultural Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total Loans $ 27,132,000   $ 30,077,000      
Percent of Loans 1.50%   1.70%      
Consumer Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total Loans $ 335,040,000   $ 307,775,000      
Allowance for credit losses $ (5,559,000) $ (5,635,000) $ (4,465,000) $ (4,077,000) $ (3,922,000) $ (3,454,000)
Percent of Loans 18.70%   18.00%