Stock-Based Compensation (Summary Of SAR Activity) (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($) $ / shares shares
Stock Appreciation Rights [Roll Forward]
Rights Outstanding, Beginning Balance | shares	948,727
Rights Granted | shares	89,829
Rights Forfeited | shares	(555)
Rights Exercised | shares	(40,976)
Rights Outstanding, Ending Balance | shares	997,025
Weighted Average Exercise Price Outstanding, Beginning Balance | $ / shares	$ 46.82
Weighted Average Exercise Price Granted | $ / shares	65.64
Weighted Average Exercise Price Forfeited | $ / shares	60.00
Weighted Average Exercise Price Exercised | $ / shares	25.88
Weighted Average Exercise Price Outstanding, Ending Balance | $ / shares	$ 49.37
Weighted Average Remaining Contractual Term	5 years 7 months 6 days
Aggregate Intrinsic Value | $	$ 11,094