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Loans Receivable and Allowance for Credit Losses (Loan Portfolio Summarized by the Past Due Status) (Details) - USD ($) | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Loans | $ 1,714,082,000 | $ 1,603,877,000
Non-Accrual | 7,720,000 | 7,622,000
Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Non-Accrual | 7,720,000 | 7,622,000
Total Past Due and Non-Accrual | 10,962,000 | 19,193,000
Purchased Credit-Impaired [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,714,082,000 | 1,603,877,000
Financial Asset, Not Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,703,120,000 | 1,584,684,000
Financing Receivables, 31 to 60 Days Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,311,000 | 11,223,000
Financing Receivables, 61 to 90 Days Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 777,000 | 348,000
Financing Receivables, Greater than 90 Days Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 154,000 |
Residential Real Estate Loans [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 330,856,000 | 316,546,000
Non-Accrual | 940,000 | 432,000
Residential Real Estate Loans [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Non-Accrual | 940,000 | 432,000
Total Past Due and Non-Accrual | 1,278,000 | 1,322,000
Residential Real Estate Loans [Member] | Purchased Credit-Impaired [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 330,856,000 | 316,546,000
Residential Real Estate Loans [Member] | Financial Asset, Not Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 329,578,000 | 315,224,000
Residential Real Estate Loans [Member] | Financing Receivables, 31 to 60 Days Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 70,000 | 877,000
Residential Real Estate Loans [Member] | Financing Receivables, 61 to 90 Days Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 268,000 | 13,000
Commercial Real Estate Loans [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 716,875,000 | 675,156,000
Non-Accrual | 5,743,000 | 2,211,000
Commercial Real Estate Loans [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Non-Accrual | 5,743,000 | 2,211,000
Total Past Due and Non-Accrual | 7,054,000 | 8,388,000
Commercial Real Estate Loans [Member] | Purchased Credit-Impaired [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 716,875,000 | 675,156,000
Commercial Real Estate Loans [Member] | Financial Asset, Not Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 709,821,000 | 666,768,000
Commercial Real Estate Loans [Member] | Financing Receivables, 31 to 60 Days Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,182,000 | 6,177,000
Commercial Real Estate Loans [Member] | Financing Receivables, 61 to 90 Days Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 129,000 |
Agricultural Real Estate Loans [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 63,488,000 | 63,859,000
Agricultural Real Estate Loans [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due and Non-Accrual |  | 127,000
Agricultural Real Estate Loans [Member] | Purchased Credit-Impaired [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 63,488,000 | 63,859,000
Agricultural Real Estate Loans [Member] | Financial Asset, Not Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 63,488,000 | 63,732,000
Agricultural Real Estate Loans [Member] | Financing Receivables, 31 to 60 Days Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans |  | 127,000
Construction Real Estate Loans [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 53,020,000 | 51,453,000
Construction Real Estate Loans [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due and Non-Accrual | 11,000 | 18,000
Construction Real Estate Loans [Member] | Purchased Credit-Impaired [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 53,020,000 | 51,453,000
Construction Real Estate Loans [Member] | Financial Asset, Not Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 53,009,000 | 51,435,000
Construction Real Estate Loans [Member] | Financing Receivables, 31 to 60 Days Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 11,000 |
Construction Real Estate Loans [Member] | Financing Receivables, 61 to 90 Days Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans |  | 18,000
Commercial Loans [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 211,991,000 | 200,576,000
Non-Accrual | 127,000 | 4,264,000
Commercial Loans [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Non-Accrual | 127,000 | 4,264,000
Total Past Due and Non-Accrual | 471,000 | 7,588,000
Commercial Loans [Member] | Purchased Credit-Impaired [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 211,991,000 | 200,576,000
Commercial Loans [Member] | Financial Asset, Not Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 211,520,000 | 192,988,000
Commercial Loans [Member] | Financing Receivables, 31 to 60 Days Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 194,000 | 3,170,000
Commercial Loans [Member] | Financing Receivables, 61 to 90 Days Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 117,000 | 154,000
Commercial Loans [Member] | Financing Receivables, Greater than 90 Days Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 33,000 |
Other Agricultural Loans [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 30,077,000 | 31,966,000
Other Agricultural Loans [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due and Non-Accrual | 49,000 | 7,000
Other Agricultural Loans [Member] | Purchased Credit-Impaired [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 30,077,000 | 31,966,000
Other Agricultural Loans [Member] | Financial Asset, Not Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 30,028,000 | 31,959,000
Other Agricultural Loans [Member] | Financing Receivables, 31 to 60 Days Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 49,000 | 7,000
Consumer Loans [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 307,775,000 | 264,321,000
Non-Accrual | 910,000 | 715,000
Consumer Loans [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Non-Accrual | 910,000 | 715,000
Total Past Due and Non-Accrual | 2,099,000 | 1,743,000
Consumer Loans [Member] | Purchased Credit-Impaired [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 307,775,000 | 264,321,000
Consumer Loans [Member] | Financial Asset, Not Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 305,676,000 | 262,578,000
Consumer Loans [Member] | Financing Receivables, 31 to 60 Days Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 805,000 | 865,000
Consumer Loans [Member] | Financing Receivables, 61 to 90 Days Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 263,000 | $ 163,000
Consumer Loans [Member] | Financing Receivables, Greater than 90 Days Past Due [Member] | Company Originated [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | $ 121,000 |

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