v3.26.1
Summary of Significant Accounting Policies (Narrative) (Details)
 3 Months Ended 12 Months Ended
Mar. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
Unit
Segment
Dec. 31, 2024
USD ($)
Summary of Significant Accounting Policies [Line Items]      
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]   Interest Receivable Interest Receivable
Accrued interest on loans   $ 2,700,000 $ 2,500,000
Net Investment in Lease, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]   Interest Receivable Interest Receivable
Foreclosed real estate   $ 0 $ 0
Proceeds from sale of foreclosed real estate   0 42,000
Net gain (loss) on sale of foreclosed real estate     (19,000)
Deferred taxes, BOLI   0  
Cash surrender value of life insurance   31,500,000 29,300,000
Annuity assets   $ 3,200,000 $ 3,200,000
Increase in ACL for loans $ 37,000    
Number of reporting unit | Unit   1  
Number of operating segment | Segment   1  
Number of reportable segment | Segment   1  
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]   srt:ChiefExecutiveOfficerMember  
Segment Reporting, Expense Information Used by CODM, Description   In assessing operating results and in allocating resources, the CODM evaluates the financial performance of the Company’s business by evaluating revenue streams, significant expenses, and budget to actual results, among other things. Profitability is only determined at the entity level. The CODM uses revenue streams to evaluate product pricing and significant expenses to assess performance and evaluate return on assets and equity. The CODM uses consolidated net income, among other metrics, to benchmark the Company against its competitors. The benchmarking analysis, coupled with monitoring of budget to actual results, are used in assessing performance and allocating resources. Loans, investments, interest-earning deposits, and non-interest income provide the revenues in the Company's operation. Interest expense, provisions for credit losses, salaries and employee benefits, occupancy and equipment, data processing, and professional services expense provide the significant expenses in the Company's operations.  
Unfunded Loan Commitment [Member]      
Summary of Significant Accounting Policies [Line Items]      
Increase in the reserve for finance receivables $ 9,000    
ASU 2023-09      
Summary of Significant Accounting Policies [Line Items]      
Change in accounting principle, accounting standards update, adopted   true  
Change in accounting principle, accounting standards update, adoption date   Jan. 01, 2025  
Change in accounting principle, accounting standards update, immaterial effect   true  
Buildings [Member]      
Summary of Significant Accounting Policies [Line Items]      
Property, plant and equipment, useful life   39 years  
Minimum [Member] | Furniture and Equipment [Member]      
Summary of Significant Accounting Policies [Line Items]      
Property, plant and equipment, useful life   3 years  
Maximum [Member] | Furniture and Equipment [Member]      
Summary of Significant Accounting Policies [Line Items]      
Property, plant and equipment, useful life   15 years