Fair Value Measurements, Quantitative Information About Unobservable Inputs Used In Recurring And Nonrecurring Level 3 Inputs (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Net income	$ 5,618,000	$ 5,290,000	$ 10,141,000	$ 10,530,000
Less allocation of earnings and dividends to participating securities	29,000	19,000	53,000	38,000
Net Income (Loss) Available to Common Stockholders, Basic	$ 5,589,000	$ 5,271,000	$ 10,088,000	$ 10,492,000
Weighted average common shares outstanding, gross (in shares)	11,396,119	12,789,684	11,635,949	12,815,089
Less average participating securities (in shares)	58,314	45,958	59,076	45,958
Basic (in shares)	11,337,805	12,743,726	11,576,873	12,769,131
Nonrecurring [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 970,000		$ 970,000		$ 1,011,000
Nonrecurring [Member] | Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	970,000		970,000		1,011,000
Nonrecurring [Member] | Impaired Loans, Fair Value Calculated Using Estimated Sales Price [Domain] | Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0		0		0
Nonrecurring [Member] | Impaired Loans, Fair Value Calculated Using Discounted Cash Flows | Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	970,000		970,000		1,011,000
Measurement Input, Discount Rate | Nonrecurring [Member] | Impaired Loans, Fair Value Calculated Using Discounted Cash Flows | High [Member] | Level 3 [Member] | Valuation, Income Approach
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0.08125		0.08125		0.0825
Measurement Input, Discount Rate | Nonrecurring [Member] | Impaired Loans, Fair Value Calculated Using Discounted Cash Flows | Low [Member] | Level 3 [Member] | Valuation, Income Approach
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0.04625		0.04625		0.0400
Measurement Input, Discount Rate | Nonrecurring [Member] | Impaired Loans, Fair Value Calculated Using Discounted Cash Flows | Weighted Average | Level 3 [Member] | Valuation, Income Approach
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 0.0606		$ 0.0606		$ 0.0607