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Note 12 - Stock-based Compensation - Schedule of Stock Option Awards (Details) - The 2018 Equity Incentive Plan [Member] | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2024 USD ($) $ / shares shares | Dec. 31, 2023 USD ($) $ / shares shares
Beginning balance, options (in shares) | shares | 662,279 |  |
Beginning balance, Weighted Average Exercise Price (in dollars per share) | $ / shares | $ 28.12 |  |
Outstanding, Weighted Average Remaining Contractual Term (Year) | 6 years 3 months 25 days |  | 6 years 8 months 8 days
Outstanding, Intrinsic Value | $ | $ 4,925,343 |  | $ 5,852,975
Granted, options (in shares) | shares | 0 |  |
Granted, Weighted Average Exercise Price (in dollars per share) | $ / shares | $ 0 |  |
Granted, Intrinsic Value | $ | $ 0 |  |
Less exercised, options (in shares) | shares | 18,612 |  |
Less exercised, Weighted Average Exercise Price (in dollars per share) | $ / shares | $ 8.45 |  |
Less exercised, Intrinsic Value | $ | $ 531,699 |  |
Less forfeited, options (in shares) | shares | 12,000 |  |
Less forfeited, Weighted Average Exercise Price (in dollars per share) | $ / shares | $ 30.73 |  |
Less forfeited, Intrinsic Value | $ | $ 0 |  |
Ending balance, options (in shares) | shares | 631,667 |  | 662,279
Ending balance, Weighted Average Exercise Price (in dollars per share) | $ / shares | $ 28.65 |  | $ 28.12
Expected to vest, options (in shares) | shares | 624,770 | [1] |
Expected to vest, Weighted Average Exercise Price (in dollars per share) | $ / shares | $ 28.65 | [1] |
Expected to vest, Weighted Average Remaining Contractual Term (Year) | 6 years 2 months 26 days | [1] |
Expected to vest, Intrinsic Value | $ | $ 4,872,165 | [1] |
Exercisable, options (in shares) | shares | 364,850 |  |
Exercisable, Weighted Average Exercise Price (in dollars per share) | $ / shares | $ 27.88 |  |
Exercisable, Weighted Average Remaining Contractual Term (Year) | 5 years 3 months 10 days |  |
Exercisable, Intrinsic Value | $ | $ 3,125,310 |  |
[1] | Forfeiture rate has been calculated and estimated to assume a forfeiture of 3.1% of the options over 10 years

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- Definition Represents the intrinsic value of options granted in the period. + References No definition available. + Details
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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(03) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Gross number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(01) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + 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 Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(02) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(03) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(01) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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