Derivatives. (Details) - Schedule of derivatives not designated as hedging instruments - Not Designated as Hedging Instrument [Member] - USD ($) $ in Thousands |
Mar. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Commodity contracts [Member] | ||
| Derivatives. (Details) - Schedule of derivatives not designated as hedging instruments [Line Items] | ||
| Assets, fair value | $ 22,355 | $ 17,149 |
| Liabilities, fair value | $ 4,741 | |
| Cash collateral balance [Member] | ||
| Derivatives. (Details) - Schedule of derivatives not designated as hedging instruments [Line Items] | ||
| Assets, fair value | $ 520 |
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|