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Loans Receivable and Allowance for Credit Losses (Summary of Recorded investment in Loan Classes Based on Payment Activity) (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | $ 1,714,082,000 | $ 1,603,877,000
Based on Payment Activity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans, Current Fiscal Year | 177,010,000 | 178,300,000
Total Loans, Fiscal Year Before Latest Fiscal Year | 148,288,000 | 153,827,000
Total Loans, Two Years Before Latest Fiscal Year | 121,656,000 | 89,184,000
Total Loans, Three Years Before Latest Fiscal Year | 69,120,000 | 51,330,000
Total Loans, Four Years Before Latest Fiscal Year | 40,503,000 | 28,551,000
Total Loans, Prior | 101,892,000 | 98,851,000
Revolving Loans Amortized Cost Basis | 33,182,000 | 32,277,000
Total | 691,651,000 | 632,320,000
Performing [Member] | Based on Payment Activity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans, Current Fiscal Year | 176,913,000 | 178,189,000
Total Loans, Fiscal Year Before Latest Fiscal Year | 147,762,000 | 153,423,000
Total Loans, Two Years Before Latest Fiscal Year | 121,227,000 | 89,066,000
Total Loans, Three Years Before Latest Fiscal Year | 68,822,000 | 51,299,000
Total Loans, Four Years Before Latest Fiscal Year | 40,477,000 | 28,452,000
Total Loans, Prior | 101,316,000 | 98,517,000
Revolving Loans Amortized Cost Basis | 33,163,000 | 32,227,000
Total | 689,680,000 | 631,173,000
Nonperforming [Member] | Based on Payment Activity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans, Current Fiscal Year | 97,000 | 111,000
Total Loans, Fiscal Year Before Latest Fiscal Year | 526,000 | 404,000
Total Loans, Two Years Before Latest Fiscal Year | 429,000 | 118,000
Total Loans, Three Years Before Latest Fiscal Year | 298,000 | 31,000
Total Loans, Four Years Before Latest Fiscal Year | 26,000 | 99,000
Total Loans, Prior | 576,000 | 334,000
Revolving Loans Amortized Cost Basis | 19,000 | 50,000
Total | 1,971,000 | 1,147,000
Residential Real Estate Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 330,856,000 | 316,546,000
Residential Real Estate Loans [Member] | Based on Payment Activity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans, Current Fiscal Year | 22,842,000 | 27,446,000
Total Loans, Fiscal Year Before Latest Fiscal Year | 41,509,000 | 62,178,000
Total Loans, Two Years Before Latest Fiscal Year | 60,246,000 | 57,691,000
Total Loans, Three Years Before Latest Fiscal Year | 52,896,000 | 35,357,000
Total Loans, Four Years Before Latest Fiscal Year | 32,161,000 | 16,464,000
Total Loans, Prior | 90,525,000 | 88,275,000
Revolving Loans Amortized Cost Basis | 30,677,000 | 29,135,000
Total | 330,856,000 | 316,546,000
Current period gross charge-offs, Prior |  | 34,000
Current period gross charge-offs, Total |  | 34,000
Residential Real Estate Loans [Member] | Performing [Member] | Based on Payment Activity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans, Current Fiscal Year | 22,842,000 | 27,446,000
Total Loans, Fiscal Year Before Latest Fiscal Year | 41,384,000 | 62,178,000
Total Loans, Two Years Before Latest Fiscal Year | 60,194,000 | 57,691,000
Total Loans, Three Years Before Latest Fiscal Year | 52,712,000 | 35,357,000
Total Loans, Four Years Before Latest Fiscal Year | 32,161,000 | 16,406,000
Total Loans, Prior | 89,965,000 | 87,951,000
Revolving Loans Amortized Cost Basis | 30,658,000 | 29,085,000
Total | 329,916,000 | 316,114,000
Residential Real Estate Loans [Member] | Nonperforming [Member] | Based on Payment Activity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans, Fiscal Year Before Latest Fiscal Year | 125,000 |
Total Loans, Two Years Before Latest Fiscal Year | 52,000 |
Total Loans, Three Years Before Latest Fiscal Year | 184,000 |
Total Loans, Four Years Before Latest Fiscal Year |  | 58,000
Total Loans, Prior | 560,000 | 324,000
Revolving Loans Amortized Cost Basis | 19,000 | 50,000
Total | 940,000 | 432,000
Construction Real Estate Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 53,020,000 | 51,453,000
Construction Real Estate Loans [Member] | Based on Payment Activity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans, Current Fiscal Year | 28,817,000 | 23,500,000
Total Loans, Fiscal Year Before Latest Fiscal Year | 12,986,000 | 14,906,000
Total Loans, Two Years Before Latest Fiscal Year | 9,024,000 | 6,791,000
Total Loans, Three Years Before Latest Fiscal Year | 431,000 | 1,599,000
Total Loans, Four Years Before Latest Fiscal Year |  | 1,829,000
Total Loans, Prior | 144,000 | 624,000
Revolving Loans Amortized Cost Basis | 1,618,000 | 2,204,000
Total | 53,020,000 | 51,453,000
Construction Real Estate Loans [Member] | Performing [Member] | Based on Payment Activity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans, Current Fiscal Year | 28,817,000 | 23,500,000
Total Loans, Fiscal Year Before Latest Fiscal Year | 12,986,000 | 14,906,000
Total Loans, Two Years Before Latest Fiscal Year | 9,024,000 | 6,791,000
Total Loans, Three Years Before Latest Fiscal Year | 431,000 | 1,599,000
Total Loans, Four Years Before Latest Fiscal Year |  | 1,829,000
Total Loans, Prior | 144,000 | 624,000
Revolving Loans Amortized Cost Basis | 1,618,000 | 2,204,000
Total | 53,020,000 | 51,453,000
Consumer Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 307,775,000 | 264,321,000
Consumer Loans [Member] | Based on Payment Activity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans, Current Fiscal Year | 125,351,000 | 127,354,000
Total Loans, Fiscal Year Before Latest Fiscal Year | 93,793,000 | 76,743,000
Total Loans, Two Years Before Latest Fiscal Year | 52,386,000 | 24,702,000
Total Loans, Three Years Before Latest Fiscal Year | 15,793,000 | 14,374,000
Total Loans, Four Years Before Latest Fiscal Year | 8,342,000 | 10,258,000
Total Loans, Prior | 11,223,000 | 9,952,000
Revolving Loans Amortized Cost Basis | 887,000 | 938,000
Total | 307,775,000 | 264,321,000
Current period gross charge-offs, Current Fiscal Year | 123,000 | 45,000
Current period gross charge-offs, Fiscal Year Before Latest Fiscal Year | 511,000 | 710,000
Current period gross charge-offs, Two Years Before Latest Fiscal Year | 850,000 | 200,000
Current period gross charge-offs, Three Years Before Latest Fiscal Year | 203,000 | 35,000
Current period gross charge-offs, Four Years Before Latest Fiscal Year | 87,000 | 45,000
Current period gross charge-offs, Prior | 75,000 | 28,000
Current period gross charge-offs, Revolving loans amortized cost basis |  | 4,000
Current period gross charge-offs, Total | 1,849,000 | 1,067,000
Consumer Loans [Member] | Performing [Member] | Based on Payment Activity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans, Current Fiscal Year | 125,254,000 | 127,243,000
Total Loans, Fiscal Year Before Latest Fiscal Year | 93,392,000 | 76,339,000
Total Loans, Two Years Before Latest Fiscal Year | 52,009,000 | 24,584,000
Total Loans, Three Years Before Latest Fiscal Year | 15,679,000 | 14,343,000
Total Loans, Four Years Before Latest Fiscal Year | 8,316,000 | 10,217,000
Total Loans, Prior | 11,207,000 | 9,942,000
Revolving Loans Amortized Cost Basis | 887,000 | 938,000
Total | 306,744,000 | 263,606,000
Consumer Loans [Member] | Nonperforming [Member] | Based on Payment Activity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans, Current Fiscal Year | 97,000 | 111,000
Total Loans, Fiscal Year Before Latest Fiscal Year | 401,000 | 404,000
Total Loans, Two Years Before Latest Fiscal Year | 377,000 | 118,000
Total Loans, Three Years Before Latest Fiscal Year | 114,000 | 31,000
Total Loans, Four Years Before Latest Fiscal Year | 26,000 | 41,000
Total Loans, Prior | 16,000 | 10,000
Total | $ 1,031,000 | $ 715,000

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