Stock Options And Restricted Stock Awards (Summary of Stock Option Activity and Weighted Average Exercise Price) (Details) - Stock Options [Member] - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, Outstanding, beginning of period shares	493,000
Options, Granted shares	38,000	0
Options, Exercised shares	(63,000)
Options, Outstanding, end of period shares	468,000
Weighted Average Exercise Price, Outstanding, beginning of period	$ 41.77
Weighted Average Exercise Price, Granted	88.42
Weighted Average Exercise Price, Exercised	40.55
Weighted Average Exercise Price, Outstanding, end of period	$ 45.72