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Note 9 - Warrants | 6 Months Ended
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Jun. 30, 2022
Notes to Financial Statements |
Warrants Disclosure [Text Block] | 9. Warrants The following table summarizes information about warrants outstanding and exercisable at June 30, 2022:
Range of Exercise Price |  |  | Number Outstanding/Exercisable |  |  | Weighted Average Remaining Life in Years |  |  | Weighted Average Exercise Price |
$5.10 |  |  |  | 2,500,000 |  |  | 4.12 |  |  | $ | 5.10 |
$6.45 |  |  |  | 350,000 |  |  | 4.12 |  |  | $ | 6.45 |
|  |  |  | 2,850,000 |  |  |  |  |  |  |  |

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- Definition The entire disclosure of warrants. + References No definition available. + Details
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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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