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Stock Based Compensation (Schedule of Outstanding Stock Options) (Details) - $ / shares | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Options Outstanding | 215,725 | 218,975 | 226,075
Exercise Price | $ 29.81 | $ 26.70 | $ 26.37
Remaining Life, Years | 6 years 10 months 24 days |  |
Options Exercisable | 174,725 | 180,975 |
Average Exercise Price | $ 29.85 | $ 27.68 |
Average Exercise Price 1 [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Options Outstanding | 4,125 |  |
Exercise Price | $ 19.39 |  |
Remaining Life, Years | 1 year |  |
Options Exercisable | 4,125 |  |
Average Exercise Price | $ 19.39 |  |
Average Exercise Price 2 [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Options Outstanding | 7,125 |  |
Exercise Price | $ 19.03 |  |
Remaining Life, Years | 1 year 10 months 24 days |  |
Options Exercisable | 7,125 |  |
Average Exercise Price | $ 19.03 |  |
Average Exercise Price 3 [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Options Outstanding | 10,125 |  |
Exercise Price | $ 22.37 |  |
Remaining Life, Years | 3 years |  |
Options Exercisable | 10,125 |  |
Average Exercise Price | $ 22.37 |  |
Average Exercise Price 4 [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Options Outstanding | 23,750 |  |
Exercise Price | $ 32.81 |  |
Remaining Life, Years | 4 years |  |
Options Exercisable | 23,750 |  |
Average Exercise Price | $ 32.81 |  |
Average Exercise Price 5 [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Options Outstanding | 20,600 |  |
Exercise Price | $ 32.34 |  |
Remaining Life, Years | 5 years |  |
Options Exercisable | 20,600 |  |
Average Exercise Price | $ 32.34 |  |
Average Exercise Price 6 [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Options Outstanding | 22,500 |  |
Exercise Price | $ 36.02 |  |
Remaining Life, Years | 6 years |  |
Options Exercisable | 22,500 |  |
Average Exercise Price | $ 36.02 |  |
Average Exercise Price 7 [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Options Outstanding | 23,500 |  |
Exercise Price | $ 26.93 |  |
Remaining Life, Years | 7 years |  |
Options Exercisable | 23,500 |  |
Average Exercise Price | $ 26.93 |  |
Average Exercise Price 8 [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Options Outstanding | 1,000 |  |
Exercise Price | $ 26.35 |  |
Remaining Life, Years | 7 years 3 months 18 days |  |
Options Exercisable | 1,000 |  |
Average Exercise Price | $ 26.35 |  |
Average Exercise Price 9 [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Options Outstanding | 1,000 |  |
Exercise Price | $ 25.38 |  |
Remaining Life, Years | 7 years 6 months |  |
Options Exercisable | 1,000 |  |
Average Exercise Price | $ 25.38 |  |
Average Exercise Price 10 [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Options Outstanding | 27,500 |  |
Exercise Price | $ 25.80 |  |
Remaining Life, Years | 8 years |  |
Options Exercisable | 27,500 |  |
Average Exercise Price | $ 25.80 |  |
Average Exercise Price 11 [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Options Outstanding | 33,500 |  |
Exercise Price | $ 33.53 |  |
Remaining Life, Years | 9 years |  |
Options Exercisable | 33,500 |  |
Average Exercise Price | $ 33.53 |  |
Average Exercise Price 12 [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Options Outstanding | 2,500 |  |
Exercise Price | $ 29.60 |  |
Remaining Life, Years | 9 years 2 months 12 days |  |
Average Exercise Price 13 [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Options Outstanding | 38,500 |  |
Exercise Price | $ 29.66 |  |
Remaining Life, Years | 10 years |  |

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