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Acquisitions - Par West Acquisition (Details) shares in Thousands, $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Jan. 11, 2019 USD ($) | Dec. 19, 2018 USD ($) refinery shares | Dec. 31, 2019 USD ($) shares | Dec. 31, 2018 USD ($) shares
Schedule of Asset Acquisition [Line Items] |  |  |  |
Issuance of common stock in connection with acquisition | $ 37,000 |  | $ 36,980 | $ 19,318
Common Stock |  |  |  |
Schedule of Asset Acquisition [Line Items] |  |  |  |
Issuance of common stock in connection with acquisition (in shares) | shares |  |  | 2,364 | 1,108
Issuance of common stock in connection with acquisition |  |  | $ 23 | $ 11
Par West - Asset Acquisition |  |  |  |
Schedule of Asset Acquisition [Line Items] |  |  |  |
Asset acquisition, consideration transferred |  | $ 66,900 |  |
Asset acquisition, consideration transferred, working capital adjustments |  | 4,300 |  |
Payments for asset acquisitions |  | 47,600 |  |
Issuance of common stock in connection with acquisition |  | 19,300 |  |
Property, plant and equipment, additions |  | 45,200 |  |
Asset acquisition, non-hydrocarbon inventory |  | 4,300 |  |
Asset acquisition, hydrocarbon inventory |  | $ 17,400 |  |
Number of refineries | refinery |  | 2 |  |
Asset acquisition, transaction costs |  |  |  | $ 5,700
Par West - Asset Acquisition | Common Stock |  |  |  |
Schedule of Asset Acquisition [Line Items] |  |  |  |
Issuance of common stock in connection with acquisition (in shares) | shares |  | 1,100 |  |

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