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Note 9 - Equity Method Investment (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Proceeds from Sale of Property, Plant, and Equipment, Total | $ 46,609 | $ 61,687 | $ 48,749
Payments to Acquire Property, Plant, and Equipment, Total | 138,273 | 75,142 | 110,802
Reversal of Deferred Gains of Sale of Property | (7) | (189) | (179)
Income (Loss) from Equity Method Investments, Total | 7,017 | 7,732 | 3,400
Equity Method Investments | $ 31,906 | $ 26,106 |
Transport Enterprise Leasing LLC [Member] |  |  |
Equity Method Investment, Ownership Percentage | 49.00% | 49.00% |
Option to Acquire Interest in Equity Method Investment, Percentage of Ownership | 51.00% |  |
Proceeds from Sale of Property, Plant, and Equipment, Total | $ 0 | $ 100 | 100
Revenue from Related Parties | 9,400 | 8,200 | 500
Payments to Acquire Property, Plant, and Equipment, Total | 10,500 | 1,800 | 0
Payments for Rent | 600 | 900 | 100
Reversal of Deferred Gains of Sale of Property | 100 | 200 |
Proceeds from Equity Method Investment, Distribution | 1,200 | 2,000 | 200
Due from Related Parties, Total | 1,300 | 7,200 |
Income (Loss) from Equity Method Investments, Total | 7,000 | 7,700 | $ 3,400
Equity Method Investments | 31,900 | 26,100 |
Equity Method Investment, Aggregate Cost | 4,900 |  |
Transport Enterprise Leasing LLC [Member] | Reduction in TEL Investment [Member] |  |  |
Deferred Gain on Sale of Property | $ 200 | $ 200 |

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