Derivatives. (Details) - Schedule of derivatives not designated as hedging instruments - Not Designated as Hedging Instrument [Member] - USD ($) $ in Thousands |
Jun. 30, 2021 |
Dec. 31, 2020 |
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| Cash collateral balance [Member] | ||
| Derivatives. (Details) - Schedule of derivatives not designated as hedging instruments [Line Items] | ||
| Assets, fair value | $ 3,777 | $ 520 |
| Commodity contracts [Member] | ||
| Derivatives. (Details) - Schedule of derivatives not designated as hedging instruments [Line Items] | ||
| Assets, fair value | 28,498 | 17,149 |
| Liabilities, fair value | $ 20,174 |
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- References No definition available.
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- Definition Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as an asset. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as a liability. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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