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Note 13 - Investments in Unconsolidated Joint Ventures (Tables) | 6 Months Ended
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Jun. 30, 2019
Notes Tables |
Condensed Financial Statements [Table Text Block] |
|  | December 31, 2018 |  | June 30, 2019
|  | City of Athens |  | Eco Nine |  | City of Athens |  | Eco Nine
Current assets |  |  | 898 |  |  |  | 684 |  |  |  | 1,691 |  |  |  | 1,494 |
Non-current assets |  |  | 30,853 |  |  |  | 30,975 |  |  |  | 30,291 |  |  |  | 30,412 |
Current liabilities |  |  | 1,530 |  |  |  | 1,762 |  |  |  | 2,262 |  |  |  | 2,629 |
Long-term liabilities |  |  | 15,627 |  |  |  | 15,900 |  |  |  | 15,060 |  |  |  | 15,335 |
|  | June 30, 2018 |  | June 30, 2019
|  | City of Athens |  | Eco Nine |  | City of Athens |  | Eco Nine
Net operating revenues |  |  | 1,501 |  |  |  | 519 |  |  |  | 2,638 |  |  |  | 2,637 |
Net (loss)/gain |  |  | 138 |  |  |  | (129 | ) |  |  | 484 |  |  |  | 365 |

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