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Note 10 - Stock Compensation Plans (Tables) | 12 Months Ended
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Dec. 31, 2020
Notes Tables |
Nonvested Restricted Stock Shares Activity [Table Text Block] |
Total authorized RSUs in Plan approved by shareholders |  |  | 4,850,000 |
Stock issued out of the Plan from vested grants |  |  | (3,091,049 | )
Non-vested grants |  |  | (324,250 | )
RSUs available for future issuance |  |  | 1,434,701 |
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] |
Non-vested grants at December 31, 2018 |  |  | 789,250 |
Granted – weighted average share price on grant date was $3.98 |  |  | 17,000 |
Vested – weighted average share price on vesting date was $2.95 |  |  | (297,250 | )
Forfeited |  |  | (20,500 | )
Non-vested grants at December 31, 2019 |  |  | 488,500 |
Granted – weighted average share price on grant date was $.90 |  |  | 40,000 |
Vested – weighted average share price on vesting date was $.92 |  |  | (193,250 | )
Forfeited |  |  | (11,000 | )
Non-vested grants at December 31, 2020 |  |  | 324,250 |
Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] |
Vesting Year |  | RSUs Vesting |
2021 |  |  | 305,250 |
2022 |  |  | 9,000 |
2023 |  |  | 10,000 |
|  |  | 324,250 |

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