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Note 10 - Stock Options, Incentive Plans, Stock Awards, and Employee Benefit Plan (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] |
|  |  |  |  |  |  |  |  |  | Weighted Average |  |  |  |  |
|  |  |  |  |  | Weighted Average |  |  | Contractual |  |  | Aggregate Intrinsic |
Stock Awards |  | Shares |  |  | Exercise Price |  |  | Remaining Life |  |  | Value |
Outstanding, December 31, 2022 |  |  | 4,982,900 |  |  | $ | 2.27 |  |  |  |  |  |  |  |  |
Granted |  |  | 1,520,000 |  |  |  | 1.74 |  |  |  |  |  |  |  |  |
Vested |  |  | 3,000 |  |  |  | — |  |  |  |  |  |  |  |  |
Forfeited |  |  | 115,000 |  |  |  | — |  |  |  |  |  |  |  |  |
Outstanding, December 31, 2023 |  |  | 6,384,900 |  |  | $ | 2.17 |  |  |  | 5.13 |  |  | $ | (0.45 | )
Expected to Vest after December 31, 2023 |  |  | 6,384,900 |  |  | $ | 2.17 |  |  |  | 5.13 |  |  | $ | (0.45 | )

X
- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
Name: | us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration