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, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, Outstanding, beginning of period shares	506,000
Options, Granted shares	23,000	0
Options, Exercised shares	(33,000)
Options, Forfeited/Cancelled shares	(3,000)
Options, Outstanding, end of period shares	493,000	506,000
Weighted Average Exercise Price, Outstanding, beginning of period	$ 39.30
Weighted Average Exercise Price, Granted	90.87
Weighted Average Exercise Price, Exercised	34.07
Weighted Average Exercise Price, Forfeited/Cancelled	40.28
Weighted Average Exercise Price, Outstanding, end of period	$ 41.77	$ 39.30