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v3.10.0.1

Major classes of assets and liabilities Refining (Details 2) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017 | Sep. 30, 2017
--- | --- | --- | ---
Current assets: |  |  |
Total current assets held for sale | $ 571 | $ 479 | $ 304
Refining | Discontinued operations, held-for-sale or disposed of by sale |  |  |
Current assets: |  |  |
Income taxes receivable | 1,640 | 1,778 | 8,444
Total current assets held for sale | 1,640 | 1,778 | 8,444
Total assets held for sale | 1,640 | 1,778 | 8,444
Noncurrent liabilities: |  |  |
Deferred income taxes (b) | 37 | 37 | 55
Total noncurrent liabilities held for sale | 37 | 37 | 55
Total liabilities held for sale | $ 37 | $ 37 | $ 55

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