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Fair Value Measurements - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2021 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2020
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Henry Hub, average spot price | $ 2.03 |  |  |  |  |  | $ 2.29 |
Colorado Interstate Gas, spot price |  | $ 1.77 | $ 1.84 | $ 2.48 |  |  |  |
Impairment expense |  |  |  |  | $ 1,838 | $ 85,806 | $ 0 |
Fair Value Idling |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Impairment expense |  |  |  |  | 200 |  |  |
Measurement Input, Discount Rate |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Fair value, input, level 3 | 10.00% | 8.00% |  |  |  |  |  |
Laramie Energy Company |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Equity method investments, fair value |  | $ 51,800 |  |  |  |  |  | $ 1,900
Equity method investment, aggregate cost |  | $ 133,300 |  |  |  |  |  | $ 47,200
Impairment charge |  |  |  |  |  | 45,294 | 81,515 |
Impairment expense |  |  |  |  | $ 0 | 0 | $ 355,220 |
Refining and Retail Segment |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Impairment expense |  |  |  |  |  | 67,922 |  |
Refining |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Impairment expense |  |  |  |  |  | 38,100 |  |
Retail |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Impairment expense |  |  |  |  |  | 29,800 |  |
Par West - Asset Acquisition |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Impairment expense |  |  |  |  |  | $ 17,900 |  |

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- Definition This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 35 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=124268079&loc=d3e32787-111569 + Details
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