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Segment Information (Textual) (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) segment | Dec. 31, 2019 USD ($)
Segment Reporting Information [Line Items] |  |
Number of reportable segments (business segments) | segment | 4 |
Property, plant and equipment, net | $ 879,179 | $ 938,418
Rail Group assets leased to others, net | 591,946 | 584,298
Canada | Trade |  |
Segment Reporting Information [Line Items] |  |
Property, plant and equipment, net | 39,900 | 41,200
Canada | Railcar | Rail |  |
Segment Reporting Information [Line Items] |  |
Rail Group assets leased to others, net | $ 20,800 | $ 22,700
Customer Concentration Risk | Revenues |  |
Segment Reporting Information [Line Items] |  |
Concentration risk percentage | 10.00% |

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