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Loans Receivable and Allowance for Credit Losses (Composition of the Loan Portfolio) (Details) - USD ($) | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | $ 1,714,082,000 | $ 1,603,877,000 |
Deferred fees, net | (444,000) | (259,000) |
Total loans receivable | 1,713,638,000 | 1,603,618,000 |
Allowance for credit losses | (19,843,000) | (18,968,000) | $ (16,999,000)
Net loans receivable | $ 1,693,795,000 | $ 1,584,650,000 |
Percent of Loans | 100.00% | 100.00% |
Residential Real Estate Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | $ 330,856,000 | $ 316,546,000 |
Allowance for credit losses | $ (1,146,000) | $ (1,351,000) | (2,833,000)
Percent of Loans | 19.30% | 19.70% |
Commercial Real Estate Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | $ 716,875,000 | $ 675,156,000 |
Allowance for credit losses | $ (11,406,000) | $ (11,871,000) | (8,293,000)
Percent of Loans | 41.80% | 42.10% |
Agricultural Real Estate Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | $ 63,488,000 | $ 63,859,000 |
Percent of Loans | 3.70% | 4.00% |
Construction Real Estate Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | $ 53,020,000 | $ 51,453,000 |
Allowance for credit losses | $ (884,000) | $ (933,000) | (409,000)
Percent of Loans | 3.10% | 3.20% |
Commercial Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | $ 211,991,000 | $ 200,576,000 |
Allowance for credit losses | $ (1,732,000) | $ (1,207,000) | (2,445,000)
Percent of Loans | 12.40% | 12.50% |
Other Agricultural Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | $ 30,077,000 | $ 31,966,000 |
Percent of Loans | 1.70% | 2.00% |
Consumer Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | $ 307,775,000 | $ 264,321,000 |
Allowance for credit losses | $ (4,465,000) | $ (3,454,000) | $ (2,636,000)
Percent of Loans | 18.00% | 16.50% |

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