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Derivatives. (Tables) | 6 Months Ended
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Jun. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Schedule of derivatives not designated as hedging instruments |
|  | As of June 30, 2021
|  | Assets |  | Liabilities
Type of Instrument |  | Balance Sheet Location |  | Fair Value |  |  | Balance Sheet Location |  | Fair Value |
Cash collateral balance |  | Other current assets |  | $ | 3,777 |  |  |  |  |  |  |
Commodity contracts |  | Derivative assets |  | $ | 28,498 |  |  | Derivative liabilities |  | $ | 20,174 |
|  | As of December 31, 2020
|  | Assets |  | Liabilities
Type of Instrument |  | Balance Sheet Location |  | Fair Value |  |  | Balance Sheet Location |  | Fair Value |
Cash collateral balance |  | Other current assets |  | $ | 520 |  |  |  |  |  |  |
Commodity contracts |  | Derivative assets |  | $ | 17,149 |  |  | Derivative liabilities |  | $ | — |
Schedule of recognized gains (losses) for derivatives |
|  |  |  | Realized Gains |
|  |  |  | For the Three Months Ended June 30, |
Type of Instrument |  | Statements of Operations Location |  | 2021 |  |  | 2020 |
Commodity contracts |  | Cost of goods sold |  | $ | 18,158 |  |  | $ | — |
|  |  |  | $ | 18,158 |  |  | $ | — |
|  |  |  | Realized Gains |
|  |  |  | For the Six Months Ended June 30, |
Type of Instrument |  | Statements of Operations Location |  | 2021 |  |  | 2020 |
Commodity contracts |  | Cost of goods sold |  | $ | 24,343 |  |  | $ | — |
|  |  |  | $ | 24,343 |  |  | $ | — |
|  |  |  | Unrealized Losses |
|  |  |  | For the Three Months Ended June 30, |
Type of Instrument |  | Statements of Operations Location |  | 2021 |  |  | 2020 |
Commodity contracts |  | Cost of goods sold |  | $ | 9,290 |  |  | $ | — |
|  |  |  | $ | 9,290 |  |  | $ | — |
|  |  |  | Unrealized Losses |
|  |  |  | For the Six Months Ended June 30, |
Type of Instrument |  | Statements of Operations Location |  | 2021 |  |  | 2020 |
Commodity contracts |  | Cost of goods sold |  | $ | 4,932 |  |  | $ | — |
|  |  |  | $ | 4,932 |  |  | $ | — |

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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4E -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5624181-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959 + Details
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- Definition Tabular disclosure of derivative instrument not designated or qualifying as hedging instrument. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4CC -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL109998890-113959 + Details
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