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Loans Receivable and Allowance for Credit Losses (Summary of Recorded investment in Loan Classes Based on Payment Activity) (Details) - USD ($) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | $ 1,815,138,000 | $ 1,714,082,000
Based on Payment Activity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans, Current Fiscal Year | 146,111,000 | 177,010,000
Total Loans, Fiscal Year Before Latest Fiscal Year | 171,912,000 | 148,288,000
Total Loans, Two Years Before Latest Fiscal Year | 124,389,000 | 121,656,000
Total Loans, Three Years Before Latest Fiscal Year | 102,297,000 | 69,120,000
Total Loans, Four Years Before Latest Fiscal Year | 60,036,000 | 40,503,000
Total Loans, Prior | 124,101,000 | 101,892,000
Revolving Loans Amortized Cost Basis | 38,359,000 | 33,182,000
Total | 767,205,000 | 691,651,000
Performing [Member] | Based on Payment Activity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans, Current Fiscal Year | 146,038,000 | 176,913,000
Total Loans, Fiscal Year Before Latest Fiscal Year | 171,604,000 | 147,762,000
Total Loans, Two Years Before Latest Fiscal Year | 123,850,000 | 121,227,000
Total Loans, Three Years Before Latest Fiscal Year | 101,687,000 | 68,822,000
Total Loans, Four Years Before Latest Fiscal Year | 59,806,000 | 40,477,000
Total Loans, Prior | 123,402,000 | 101,316,000
Revolving Loans Amortized Cost Basis | 38,340,000 | 33,163,000
Total | 764,727,000 | 689,680,000
Nonperforming [Member] | Based on Payment Activity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans, Current Fiscal Year | 73,000 | 97,000
Total Loans, Fiscal Year Before Latest Fiscal Year | 308,000 | 526,000
Total Loans, Two Years Before Latest Fiscal Year | 539,000 | 429,000
Total Loans, Three Years Before Latest Fiscal Year | 610,000 | 298,000
Total Loans, Four Years Before Latest Fiscal Year | 230,000 | 26,000
Total Loans, Prior | 699,000 | 576,000
Revolving Loans Amortized Cost Basis | 19,000 | 19,000
Total | 2,478,000 | 1,971,000
Residential Real Estate Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 339,997,000 | 330,856,000
Residential Real Estate Loans [Member] | Based on Payment Activity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans, Current Fiscal Year | 15,317,000 | 22,842,000
Total Loans, Fiscal Year Before Latest Fiscal Year | 36,098,000 | 41,509,000
Total Loans, Two Years Before Latest Fiscal Year | 39,282,000 | 60,246,000
Total Loans, Three Years Before Latest Fiscal Year | 55,610,000 | 52,896,000
Total Loans, Four Years Before Latest Fiscal Year | 48,931,000 | 32,161,000
Total Loans, Prior | 111,162,000 | 90,525,000
Revolving Loans Amortized Cost Basis | 33,597,000 | 30,677,000
Total | 339,997,000 | 330,856,000
Current period gross charge-offs, Prior | 63,000 |
Current period gross charge-offs, Total | 63,000 |
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 | 15,317,000 | 22,842,000
Total Loans, Fiscal Year Before Latest Fiscal Year | 36,098,000 | 41,384,000
Total Loans, Two Years Before Latest Fiscal Year | 39,157,000 | 60,194,000
Total Loans, Three Years Before Latest Fiscal Year | 55,459,000 | 52,712,000
Total Loans, Four Years Before Latest Fiscal Year | 48,761,000 | 32,161,000
Total Loans, Prior | 110,550,000 | 89,965,000
Revolving Loans Amortized Cost Basis | 33,578,000 | 30,658,000
Total | 338,920,000 | 329,916,000
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 | 125,000 | 52,000
Total Loans, Three Years Before Latest Fiscal Year | 151,000 | 184,000
Total Loans, Four Years Before Latest Fiscal Year | 170,000 |
Total Loans, Prior | 612,000 | 560,000
Revolving Loans Amortized Cost Basis | 19,000 | 19,000
Total | 1,077,000 | 940,000
Construction Real Estate Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 80,311,000 | 53,020,000
Construction Real Estate Loans [Member] | Based on Payment Activity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans, Current Fiscal Year | 20,134,000 | 28,817,000
Total Loans, Fiscal Year Before Latest Fiscal Year | 32,025,000 | 12,986,000
Total Loans, Two Years Before Latest Fiscal Year | 15,635,000 | 9,024,000
Total Loans, Three Years Before Latest Fiscal Year | 8,712,000 | 431,000
Total Loans, Four Years Before Latest Fiscal Year | 328,000 |
Total Loans, Prior | 105,000 | 144,000
Revolving Loans Amortized Cost Basis | 3,372,000 | 1,618,000
Total | 80,311,000 | 53,020,000
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 | 20,134,000 | 28,817,000
Total Loans, Fiscal Year Before Latest Fiscal Year | 32,025,000 | 12,986,000
Total Loans, Two Years Before Latest Fiscal Year | 15,635,000 | 9,024,000
Total Loans, Three Years Before Latest Fiscal Year | 8,662,000 | 431,000
Total Loans, Four Years Before Latest Fiscal Year | 328,000 |
Total Loans, Prior | 105,000 | 144,000
Revolving Loans Amortized Cost Basis | 3,372,000 | 1,618,000
Total | 80,261,000 | 53,020,000
Construction Real Estate Loans [Member] | Nonperforming [Member] | Based on Payment Activity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans, Three Years Before Latest Fiscal Year | 50,000 |
Total | 50,000 |
Consumer Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 346,897,000 | 307,775,000
Consumer Loans [Member] | Based on Payment Activity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans, Current Fiscal Year | 110,660,000 | 125,351,000
Total Loans, Fiscal Year Before Latest Fiscal Year | 103,789,000 | 93,793,000
Total Loans, Two Years Before Latest Fiscal Year | 69,472,000 | 52,386,000
Total Loans, Three Years Before Latest Fiscal Year | 37,975,000 | 15,793,000
Total Loans, Four Years Before Latest Fiscal Year | 10,777,000 | 8,342,000
Total Loans, Prior | 12,834,000 | 11,223,000
Revolving Loans Amortized Cost Basis | 1,390,000 | 887,000
Total | 346,897,000 | 307,775,000
Current period gross charge-offs, Current Fiscal Year | 6,000 | 123,000
Current period gross charge-offs, Fiscal Year Before Latest Fiscal Year | 325,000 | 511,000
Current period gross charge-offs, Two Years Before Latest Fiscal Year | 383,000 | 850,000
Current period gross charge-offs, Three Years Before Latest Fiscal Year | 337,000 | 203,000
Current period gross charge-offs, Four Years Before Latest Fiscal Year | 108,000 | 87,000
Current period gross charge-offs, Prior | 114,000 | 75,000
Current period gross charge-offs, Total | 1,273,000 | 1,849,000
Consumer Loans [Member] | Performing [Member] | Based on Payment Activity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans, Current Fiscal Year | 110,587,000 | 125,254,000
Total Loans, Fiscal Year Before Latest Fiscal Year | 103,481,000 | 93,392,000
Total Loans, Two Years Before Latest Fiscal Year | 69,058,000 | 52,009,000
Total Loans, Three Years Before Latest Fiscal Year | 37,566,000 | 15,679,000
Total Loans, Four Years Before Latest Fiscal Year | 10,717,000 | 8,316,000
Total Loans, Prior | 12,747,000 | 11,207,000
Revolving Loans Amortized Cost Basis | 1,390,000 | 887,000
Total | 345,546,000 | 306,744,000
Consumer Loans [Member] | Nonperforming [Member] | Based on Payment Activity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans, Current Fiscal Year | 73,000 | 97,000
Total Loans, Fiscal Year Before Latest Fiscal Year | 308,000 | 401,000
Total Loans, Two Years Before Latest Fiscal Year | 414,000 | 377,000
Total Loans, Three Years Before Latest Fiscal Year | 409,000 | 114,000
Total Loans, Four Years Before Latest Fiscal Year | 60,000 | 26,000
Total Loans, Prior | 87,000 | 16,000
Total | $ 1,351,000 | $ 1,031,000

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