Note 13 - Stock-based Compensation - Option Award Activity (Details) - $ / shares |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2026 |
Dec. 31, 2025 |
|
| Outstanding and exercisable, number (in shares) | 28,074 | |
| Outstanding and exercisable, weighted average exercise price (in dollars per share) | $ 97.54 | |
| Outstanding and exercisable, grant date fair value (in dollars per share) | $ 24.5 | |
| Outstanding and exercisable, remaining contractual term (Year) | 3 years 21 days | 3 years 6 months |
| Cancelled, number (in shares) | (1,690) | |
| Cancelled, weighted average exercise price (in dollars per share) | $ 98.17 | |
| Cancelled, grant date fair value (in dollars per share) | $ 43.52 | |
| Outstanding and exercisable, number (in shares) | 26,384 | 28,074 |
| Outstanding and exercisable, weighted average exercise price (in dollars per share) | $ 97.5 | $ 97.54 |
| Outstanding and exercisable, grant date fair value (in dollars per share) | $ 23.28 | $ 24.5 |
| X | ||||||||||
- 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. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Weighted average grant-date fair value of non-vested options forfeited. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Weighted average grant-date fair value of non-vested options outstanding. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Weighted-average contractual term remaining for option award outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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