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Fair Value Measurements And Derivative Instruments (Narrative) (Details 5) - USD ($) $ in Thousands | 12 Months Ended
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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)

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