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Impairments and Other Charges (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) $ / shares | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) TankBarge
Impairments and Other Charges [Abstract] |  |  |  |  |  |
Impairment charge | $ 165,304,000 |  |  |  |  |
Impairment of intangible assets other than goodwill | 148,909,000 |  |  |  |  |
Impairment of property and equipment | 16,395,000 |  |  |  |  |
Goodwill impairment charge | 387,970,000 |  | $ 2,702,000 | $ 387,970,000 |  | $ 2,702,000
Impairments and Other Charges [Abstract] |  |  |  |  |  |
Non-cash pre-tax impairment charge | $ 8,000,000 | $ 35,525,000 | 82,705,000 |  |  |
Impairment charge after tax effect |  |  | $ 65,337,000 |  |  |
Impairment charge after tax effect on earning per share (in dollars per share) | $ / shares |  |  | $ 1.09 |  |  |
Lease cancellation costs |  |  |  | $ 0 | $ 0 | 2,403,000
Vessels [Member] |  |  |  |  |  |
Impairments and Other Charges [Abstract] |  |  |  |  |  |
Non-cash pre-tax impairment charge |  |  | $ 78,835,000 |  |  |
Fair market value of assets |  |  | 13,247,000 |  |  | 13,247,000
Tank Barge [Member] |  |  |  |  |  |
Impairments and Other Charges [Abstract] |  |  |  |  |  |
Non-cash pre-tax impairment charge |  |  |  |  |  | $ 3,870,000
Number of vessels to be disposed of | TankBarge |  |  |  |  |  | 4
Fair market value of assets |  |  | 220,000 |  |  | $ 220,000
Scrap value of vessel |  |  | $ 220,000 |  |  | 220,000
Lease cancellation costs |  |  |  |  |  | $ 2,403,000

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