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Note 3 - Cash, Cash Equivalents, and Restricted Cash (Tables) | 12 Months Ended
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Dec. 31, 2022
Notes Tables |
Restrictions on Cash and Cash Equivalents [Table Text Block] |
|  | December 31, |
|  | 2022 |  |  | 2021 |
Cash and cash equivalents |  | $ | 25,493,141 |  |  | $ | 72,508,528 |
Funds held as collateral |  |  | 21,026,579 |  |  |  | 9,185,872 |
Cash held by BOAM funds and other |  |  | 8,146,792 |  |  |  | - |
Total Cash, Cash Equivalents, and Restricted Cash as Presented in the Consolidated Statements of Cash Flows |  | $ | 54,666,512 |  |  | $ | 81,694,400 |

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