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Loans Receivable and Allowance for Credit Losses (Loan Concentrations by Industry) (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding Loans | $ 1,621,680,000 | $ 1,603,877,000
Commercial Real Estate Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding Loans | 691,755,000 | 675,156,000
Commercial Real Estate Loans [Member] | Loans Receivable [Member] | Commercial Rentals [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding Loans | $ 148,899,000 |
Percent of Loans Outstanding | 9.18% |
Residential Real Estate Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding Loans | $ 313,531,000 | 316,546,000
Residential Real Estate Loans [Member] | Loans Receivable [Member] | Residential Rentals [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding Loans | $ 113,474,000 |
Percent of Loans Outstanding | 7.00% |
Consumer Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding Loans | $ 271,231,000 | 264,321,000
Consumer Loans [Member] | Loans Receivable [Member] | Hotels/Motels [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding Loans | $ 92,138,000 |
Percent of Loans Outstanding | 5.68% |
Consumer Loans [Member] | Loans Receivable [Member] | Dairy Cattle/Milk Product [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding Loans | $ 47,430,000 |
Percent of Loans Outstanding | 2.93% |
Consumer Loans [Member] | Loans Receivable [Member] | Fuel/Gas Stations [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding Loans | $ 46,552,000 |
Percent of Loans Outstanding | 2.87% |
Consumer Loans [Member] | Loans Receivable [Member] | Government Support [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding Loans | $ 26,914,000 |
Percent of Loans Outstanding | 1.66% |
Consumer Loans [Member] | Loans Receivable [Member] | Mobile Home Park [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding Loans | $ 27,861,000 |
Percent of Loans Outstanding | 1.72% |
Consumer Loans [Member] | Loans Receivable [Member] | Wineries [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding Loans | $ 23,863,000 |
Percent of Loans Outstanding | 1.47% |
Consumer Loans [Member] | Loans Receivable [Member] | Camps [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding Loans | $ 25,647,000 |
Percent of Loans Outstanding | 1.58% |
Consumer Loans [Member] | Loans Receivable [Member] | Resorts [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding Loans | $ 20,154,000 |
Percent of Loans Outstanding | 1.24% |
Construction Real Estate Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding Loans | $ 47,409,000 | $ 51,453,000
Construction Real Estate Loans [Member] | Loans Receivable [Member] | Builders/Contractors [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding Loans | $ 39,878,000 |
Percent of Loans Outstanding | 2.46% |

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