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Note 9 - Shareholders' Equity (Tables) | 6 Months Ended
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Jun. 30, 2024
Notes Tables |
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  | June 30, 2024 |  |  | December 31, 2023 |
|  |  |  |  |  | Weighted |  |  |  |  |  |  | Weighted |
|  |  |  |  |  | Average |  |  |  |  |  |  | Average |
|  | Number of |  |  | Exercise |  |  | Number of |  |  | Exercise |
|  | Shares |  |  | Price |  |  | Shares |  |  | Price |
Stock options outstanding and exercisable |  |  | 23,176 |  |  | $ | 38.92 |  |  |  | 23,176 |  |  | $ | 38.92 |
Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block] |
Options Outstanding and Exercisable |
|  |  | Exercise |  |  | Weighted |  |  | Remaining |
|  |  | Price |  |  | Average |  |  | Contractual |
Number of |  |  | Range |  |  | Exercise |  |  | Term |
Shares |  |  | Low |  |  | High |  |  | Price |  |  | (years) |
16,500 |  |  | $ | 7.20 |  |  | $ | 11.60 |  |  | $ | 10.00 |  |  |  | 3.3 |
5,676 |  |  |  | 90.00 |  |  |  | 90.00 |  |  |  | 90.00 |  |  |  | 0.5 |
1,000 |  |  |  | 226.20 |  |  |  | 226.20 |  |  |  | 226.20 |  |  |  | 0.2 |
23,176 |  |  | $ | 7.20 |  |  | $ | 226.20 |  |  | $ | 38.92 |  |  |  | 2.5 |
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] |
|  |  |  |  |  | Weighted-Avg. |
|  |  |  |  |  | Grant Date |
|  |  |  |  |  | Fair Value |
|  | Shares |  |  | Per Share |
Non-vested restricted stock as of December 31, 2023 |  |  | 855,236 |  |  | $ | 2.63 |
Granted |  |  | 1,299,000 |  |  | $ | 0.96 |
Vested |  |  | (671,041 | ) |  | $ | 2.13 |
Modifications (accelerated vesting) |  |  | (20,000 | ) |  | $ | 1.64 |
Forfeited |  |  | (95,500 | ) |  | $ | 1.22 |
Non-vested restricted stock as of June 30, 2024 |  |  | 1,367,695 |  |  | $ | 1.41 |
Class of Treasury Stock [Table Text Block] |
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
|  | (in thousands) |  |  |  |  |  |  |  |  |
Shares repurchased |  |  | 145,300 |  |  | $ | 163,300 |  |  |  | 463,500 |  |  |  | 163,300 |
Weighted average price per share |  | $ | 1.158 |  |  | $ | 1.475 |  |  | $ | 1.091 |  |  | $ | 1.475 |
Value of shares repurchased |  | $ | 168,250 |  |  | $ | 240,793 |  |  | $ | 505,733 |  |  | $ | 240,793 |

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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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