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Loans Receivable and Allowance for Credit Losses (Summary of Recorded investment in Loan Classes Based on Payment Activity) (Details) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total $ 1,771,682,000 $ 1,714,082,000
Based on Payment Activity [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total Loans, Current Fiscal Year 44,900,000 177,010,000
Total Loans, Fiscal Year Before Latest Fiscal Year 181,182,000 148,288,000
Total Loans, Two Years Before Latest Fiscal Year 138,850,000 121,656,000
Total Loans, Three Years Before Latest Fiscal Year 115,435,000 69,120,000
Total Loans, Four Years Before Latest Fiscal Year 66,424,000 40,503,000
Total Loans, Prior 136,255,000 101,892,000
Revolving Loans Amortized Cost Basis 33,151,000 33,182,000
Total 716,197,000 691,651,000
Performing [Member] | Based on Payment Activity [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total Loans, Current Fiscal Year 44,900,000 176,913,000
Total Loans, Fiscal Year Before Latest Fiscal Year 181,067,000 147,762,000
Total Loans, Two Years Before Latest Fiscal Year 138,283,000 121,227,000
Total Loans, Three Years Before Latest Fiscal Year 114,974,000 68,822,000
Total Loans, Four Years Before Latest Fiscal Year 66,089,000 40,477,000
Total Loans, Prior 135,722,000 101,316,000
Revolving Loans Amortized Cost Basis 33,113,000 33,163,000
Total 714,148,000 689,680,000
Nonperforming [Member] | Based on Payment Activity [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total Loans, Current Fiscal Year   97,000
Total Loans, Fiscal Year Before Latest Fiscal Year 115,000 526,000
Total Loans, Two Years Before Latest Fiscal Year 567,000 429,000
Total Loans, Three Years Before Latest Fiscal Year 461,000 298,000
Total Loans, Four Years Before Latest Fiscal Year 335,000 26,000
Total Loans, Prior 533,000 576,000
Revolving Loans Amortized Cost Basis 38,000 19,000
Total 2,049,000 1,971,000
Residential Real Estate Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 330,288,000 330,856,000
Residential Real Estate Loans [Member] | Based on Payment Activity [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total Loans, Current Fiscal Year 3,405,000 22,842,000
Total Loans, Fiscal Year Before Latest Fiscal Year 26,247,000 41,509,000
Total Loans, Two Years Before Latest Fiscal Year 41,215,000 60,246,000
Total Loans, Three Years Before Latest Fiscal Year 58,259,000 52,896,000
Total Loans, Four Years Before Latest Fiscal Year 51,915,000 32,161,000
Total Loans, Prior 118,901,000 90,525,000
Revolving Loans Amortized Cost Basis 30,346,000 30,677,000
Total 330,288,000 330,856,000
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 3,405,000 22,842,000
Total Loans, Fiscal Year Before Latest Fiscal Year 26,247,000 41,384,000
Total Loans, Two Years Before Latest Fiscal Year 41,090,000 60,194,000
Total Loans, Three Years Before Latest Fiscal Year 58,207,000 52,712,000
Total Loans, Four Years Before Latest Fiscal Year 51,735,000 32,161,000
Total Loans, Prior 118,458,000 89,965,000
Revolving Loans Amortized Cost Basis 30,308,000 30,658,000
Total 329,450,000 329,916,000
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 52,000 184,000
Total Loans, Four Years Before Latest Fiscal Year 180,000  
Total Loans, Prior 443,000 560,000
Revolving Loans Amortized Cost Basis 38,000 19,000
Total 838,000 940,000
Construction Real Estate Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 58,226,000 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 1,853,000 28,817,000
Total Loans, Fiscal Year Before Latest Fiscal Year 33,626,000 12,986,000
Total Loans, Two Years Before Latest Fiscal Year 11,210,000 9,024,000
Total Loans, Three Years Before Latest Fiscal Year 9,040,000 431,000
Total Loans, Four Years Before Latest Fiscal Year 359,000  
Total Loans, Prior 131,000 144,000
Revolving Loans Amortized Cost Basis 2,007,000 1,618,000
Total 58,226,000 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 1,853,000 28,817,000
Total Loans, Fiscal Year Before Latest Fiscal Year 33,626,000 12,986,000
Total Loans, Two Years Before Latest Fiscal Year 11,210,000 9,024,000
Total Loans, Three Years Before Latest Fiscal Year 9,040,000 431,000
Total Loans, Four Years Before Latest Fiscal Year 348,000  
Total Loans, Prior 131,000 144,000
Revolving Loans Amortized Cost Basis 2,007,000 1,618,000
Total 58,215,000 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, Four Years Before Latest Fiscal Year 11,000  
Total 11,000  
Consumer Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 327,683,000 307,775,000
Consumer Loans [Member] | Based on Payment Activity [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total Loans, Current Fiscal Year 39,642,000 125,351,000
Total Loans, Fiscal Year Before Latest Fiscal Year 121,309,000 93,793,000
Total Loans, Two Years Before Latest Fiscal Year 86,425,000 52,386,000
Total Loans, Three Years Before Latest Fiscal Year 48,136,000 15,793,000
Total Loans, Four Years Before Latest Fiscal Year 14,150,000 8,342,000
Total Loans, Prior 17,223,000 11,223,000
Revolving Loans Amortized Cost Basis 798,000 887,000
Total 327,683,000 307,775,000
Current period gross charge-offs, Current Fiscal Year   123,000
Current period gross charge-offs, Fiscal Year Before Latest Fiscal Year 69,000 511,000
Current period gross charge-offs, Two Years Before Latest Fiscal Year 79,000 850,000
Current period gross charge-offs, Three Years Before Latest Fiscal Year 87,000 203,000
Current period gross charge-offs, Four Years Before Latest Fiscal Year 8,000 87,000
Current period gross charge-offs, Prior 86,000 75,000
Current period gross charge-offs, Total 329,000 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 39,642,000 125,254,000
Total Loans, Fiscal Year Before Latest Fiscal Year 121,194,000 93,392,000
Total Loans, Two Years Before Latest Fiscal Year 85,983,000 52,009,000
Total Loans, Three Years Before Latest Fiscal Year 47,727,000 15,679,000
Total Loans, Four Years Before Latest Fiscal Year 14,006,000 8,316,000
Total Loans, Prior 17,133,000 11,207,000
Revolving Loans Amortized Cost Basis 798,000 887,000
Total 326,483,000 306,744,000
Consumer Loans [Member] | Nonperforming [Member] | Based on Payment Activity [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total Loans, Current Fiscal Year   97,000
Total Loans, Fiscal Year Before Latest Fiscal Year 115,000 401,000
Total Loans, Two Years Before Latest Fiscal Year 442,000 377,000
Total Loans, Three Years Before Latest Fiscal Year 409,000 114,000
Total Loans, Four Years Before Latest Fiscal Year 144,000 26,000
Total Loans, Prior 90,000 16,000
Total $ 1,200,000 $ 1,031,000