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Note 11 - Equity Method Investment (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Proceeds from Sale of Property, Plant, and Equipment, Total |  |  | $ 86,555 | $ 31,235 |
Reversal of Deferred Gains of Sale of Property |  |  | (77) | (7) |
Income (Loss) from Equity Method Investments, Total | $ 1,176 | $ 2,138 | 971 | 7,548 |
Transport Enterprise Leasing LLC [Member] |  |  |  |  |
Proceeds from Sale of Property, Plant, and Equipment, Total |  |  | 0 | 0 |
Revenue from Related Parties |  |  | 6,300 | 7,100 |
Reversal of Deferred Gains of Sale of Property |  |  | $ 100 | $ 100 |
Equity Method Investment, Ownership Percentage | 49.00% | 49.00% | 49.00% | 49.00% |
Due from Related Parties, Total | $ 800 |  | $ 800 |  | $ 1,200
Income (Loss) from Equity Method Investments, Total |  |  | 1,000 |  |
Proceeds from Equity Method Investment, Distribution |  | $ 1,200 | 0 | $ 1,200 |
Equity Method Investments | 33,000 |  | 33,000 |  | $ 32,400
Transport Enterprise Leasing LLC [Member] | Reduction in TEL Investment [Member] |  |  |  |  |
Deferred Gain on Sale of Property | $ 100 | $ 200 | $ 100 | $ 200 |

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