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