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Note 22 - Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Schedule of Share-Based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block] |
|  | Year Ended
|  | December 31,
|  | 2023
Fair value of options granted |  | $ 3.03
Risk-free interest rate |  | 3.80%
Term (in years) |  | 3.0
Volatility |  | 60%
Weighted-average expected dividend yield |  | 0.00%
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] |
|  | Restricted |  |  | Weighted-Average |
|  | Stock |  |  | Grant Date |
|  | Units/Awards |  |  | Fair Values |
Outstanding on December 31, 2022 |  |  | 1,140,877 |  |  | $ | 6.30 |
Granted |  |  | 2,007,609 |  |  | $ | 3.90 |
Vested |  |  | 583,810 |  |  | $ | 6.16 |
Forfeited |  |  | 27,092 |  |  | $ | 5.37 |
Outstanding on December 31, 2023 |  |  | 2,537,584 |  |  | $ | 4.44 |
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  |  |  |  |  |  |  |  |  | Average |  |  |  |  |
|  |  |  |  |  | Weighted |  |  | Remaining |  |  | Aggregate |
|  | Shares |  |  | Exercise |  |  | Contractual |  |  | Intrinsic |
|  | Under |  |  | Price |  |  | Life |  |  | Value |
|  | Option |  |  | Per Share |  |  | (Years) |  |  | ($ millions) |
Outstanding on December 31, 2022 |  |  | 6,884,311 |  |  | $ | 6.97 |  |  |  |  |  |  |  |  |
Granted |  |  | 50,000 |  |  | $ | 4.28 |  |  |  |  |  |  |  |  |
Expired |  |  | 161,203 |  |  | $ | 15.41 |  |  |  |  |  |  |  |  |
Exercised |  |  | 25,000 |  |  | $ | 3.90 |  |  |  |  |  |  |  |  |
Outstanding on December 31, 2023 |  |  | 6,748,108 |  |  | $ | 6.75 |  |  |  | 3.35 |  |  | $ | 2 |
Exercisable on December 31, 2023 |  |  | 6,698,108 |  |  | $ | 6.77 |  |  |  | 3.33 |  |  | $ | 2 |
Expected to vest December 31, 2023 |  |  | 6,748,108 |  |  | $ | 6.75 |  |  |  | 3.35 |  |  | $ | 2 |
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | Year Ended |
|  | December 31, |
|  | 2023 |
Weighted-average fair value of options granted |  | $ | 3.48 |
Weighted-average risk-free interest rate |  |  | 3.75 | %
Expected option lives (in years) |  |  | 4.5 |
Weighted-average volatility |  |  | 120 | %
Expected dividend yield |  |  | 0.00 | %
|  | Year Ended |
|  | December 31, |
|  | 2023 |
Fair value of options granted |  | $ | 2.25 |
Risk-free interest rate |  |  | 3.80 | %
Term (in years) |  |  | 3.0 |
Volatility |  |  | 60 | %
Weighted-average expected dividend yield |  |  | 0.00 | %
|  | February 16, 2023
|  | Option Award
|  | Modifications
|  | Immediately Before |  | Immediately After
Range of fair values |  | 0.000 -2.1414 |  | 1.322 -2.2424
Range of risk-free interest rates |  | 3.82% - 4.99% |  | 3.82% - 4.99%
Range of remaining contractual terms (in years) |  | 0.37 - 4.25 |  | 3.37 - 7.25
Range of weighted volatilities |  | 66.96% - 103.39% |  | 66.96% - 103.39%
Expected dividend yield |  | 0.00% |  | 0.00%
Early exercise model |  | 2.5 |  | 2.5
Number of times steps |  | 500 |  | 500

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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 -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -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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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- 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
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