Stock-Based Compensation (Summary Of SAR Activity) (Details) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($) $ / shares shares
Stock Appreciation Rights [Roll Forward]
Rights Outstanding, Beginning Balance | shares	896,348
Rights Granted | shares	96,318
Rights Forfeited | shares	(8,135)
Rights Expired | shares	(2,350)
Rights Exercised | shares	(66,608)
Rights Outstanding, Ending Balance | shares	915,573
Weighted Average Exercise Price Outstanding, Beginning Balance | $ / shares	$ 46.21
Weighted Average Exercise Price Granted | $ / shares	70.64
Weighted Average Exercise Price Forfeited | $ / shares	61.68
Weighted Average Exercise Price Expired | $ / shares	56.68
Weighted Average Exercise Price Exercised | $ / shares	40.54
Weighted Average Exercise Price Outstanding, Ending Balance | $ / shares	$ 49.02
Weighted Average Remaining Contractual Term	5 years 6 months
Aggregate Intrinsic Value | $	$ 16,367