Fair Value Measurements And Derivative Instruments (Narrative) (Details 5) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	$ 11,500	$ 7,400
host financial instrument
Derivatives, Fair Value [Line Items]
Liability Derivatives	7,000
Other Current Liabilities [Member] | host financial instrument
Derivatives, Fair Value [Line Items]
Amount to be Reclassified During Next 12 Months, net	$ 2,600
Commodity derivative contracts
Derivatives, Fair Value [Line Items]
Liability Derivatives		$ (2,200)