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v3.19.1

Note 3 - Restricted Cash (Tables) | 3 Months Ended
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Mar. 31, 2019
Notes Tables |
Restrictions on Cash and Cash Equivalents [Table Text Block] |
|  | March 31, |  |  | December 31, |
|  | 2019 |  |  | 2018 |
Insurance premium escrow |  | $ | 692,275 |  |  | $ | 1,038,767 |
|  | March 31, |  |  | March 31, |
|  | 2019 |  |  | 2018 |
Cash and cash equivalents |  | $ | 10,157,438 |  |  | $ | 60,171,072 |
Restricted cash |  |  | 692,275 |  |  |  | 508,751 |
Total Cash, Cash Equivalents, and Restricted Cash as Presented in the Consolidated Statement of Cash Flows |  | $ | 10,849,713 |  |  | $ | 60,679,823 |

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