Nature of Banking Activities and Significant Accounting Policies (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Jun. 18, 2025	May 16, 2023
Property Plant And Equipment [Line Items]
Ownership percentage in subsidiaries	10000.00%
Sale of non mortgage loans	$ 21,800,000
Sale Of Mortgage Loans	18,800,000
Limit of the estimated appraised value of the furnished home		80.00%
Reserve credit losses for unfunded commitments	326,000	$ 505,000
Provision for credit losses	$ 3,701,000	$ 2,551,000
Stock incentive plan, authorized common stock				250,000
"More likely than not" threshold	50.00%
Antidilutive securities excluded from computation of earnings per share, amount	0	0
Number of shares of common stock able to be repurchased			150,000
Repurchase and retirement of common stock	9,598	7,868
Stock repurchased and retired during period, value	$ 36.25	$ 30.08
Maximum numbers of shares that may yet be purchased under plan	149,182
Unfunded Commitments [Member]
Property Plant And Equipment [Line Items]
Reserve credit losses for unfunded commitments	$ 326,000	505,000
Provision for credit losses	179,000	26,000
Loans Held for Investment [Member]
Property Plant And Equipment [Line Items]
Accrued interest receivable	$ 4,600,000	$ 4,800,000
Building [Member] | Minimum [Member]
Property Plant And Equipment [Line Items]
Estimated useful lives	10 years
Building [Member] | Maximum [Member]
Property Plant And Equipment [Line Items]
Estimated useful lives	39 years
Furniture and equipment [Member] | Minimum [Member]
Property Plant And Equipment [Line Items]
Estimated useful lives	3 years
Furniture and equipment [Member] | Maximum [Member]
Property Plant And Equipment [Line Items]
Estimated useful lives	10 years