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Property, Plant and Equipment (Textual) (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2018 | Dec. 31, 2017 | Jun. 30, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Capitalized interest |  |  |  | $ 2,200 | $ 1,700 |
Depreciation expense |  |  |  | 82,300 | 46,500 | $ 48,300
Impairment of property, plant and equipment held for use |  |  |  | 41,212 | 6,272 | 10,913
Trade |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Impairment of property, plant and equipment held for sale |  | $ 5,300 |  | 1,600 |  |
Asset impairment |  | 10,900 |  |  |  |
Impairment of property, plant and equipment held for use |  | $ 5,600 | $ 3,100 | 3,700 |  |
Rail Group |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Impairment of property, plant and equipment held for use | $ 4,700 |  |  |  |  |
Depreciation expense on railcar assets leased to others |  |  |  | 28,500 | $ 24,700 | $ 20,000
Frac Sand Assets [Member] | Trade |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Impairment of property, plant and equipment held for use |  |  |  | $ 32,300 |  |

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