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Note 18 - Other Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2021
Notes Tables |
Share-based Payment Arrangement, Activity [Table Text Block] |
|  | Options |  |  | Weighted Average Exercise Price |  |  | Warrants |  |  | Weighted Average Exercise Price |
Balance at January 1, 2020 |  |  | 471,144 |  |  | $ | 3.95 |  |  |  | - |  |  |  |  |
Granted |  |  | - |  |  |  |  |  |  |  | 792,660 |  |  |  | 1.00 |
Cancelled/Expired |  |  | (471,144 | ) |  |  | 3.95 |  |  |  |  |  |  |  |  |
Exercised/Issued |  |  | - |  |  |  |  |  |  |  | (597,500 | ) |  |  | 1.00 |
Balance at December 31, 2020 |  |  | - |  |  |  |  |  |  |  | 195,160 |  |  |  | 1.00 |
Granted |  |  | - |  |  |  |  |  |  |  | 128,572 |  |  |  | 1.75 |
Cancelled/Expired |  |  | - |  |  |  |  |  |  |  |  |  |  |  |  |
Exercised/Issued |  |  |  |  |  |  |  |  |  |  | (195,160 | ) |  |  | 1.00 |
Balance at December 31, 2021 |  |  | - |  |  |  |  |  |  |  | 128,572 |  |  | $ | 1.75 |
Exercisable at December 31, 2021 |  |  |  |  |  |  |  | 128,572 |  |  | $ | 1.75 |
Shares Reserved for Future Issuance [Table Text Block] |
2020 Warrants |  |  | 195,160 |
Series A Preferred Stock |  |  | 5,482,000 |
Series B Preferred Stock |  |  | 1,700,000 |
Shares reserved as of December 31, 2020 |  |  | 7,377,160 |
Series C Preferred Stock |  |  | 1,700,000 |
Series D Preferred Stock |  |  | 1,700,000 |
2020 Warrants exercised |  |  | (195,160 | )
2021 Warrants |  |  | 128,572 |
Shares reserved as of December 31, 2021 |  |  | 10,710,572 |

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