Note 13 - Stock-based Compensation - Assumptions (Details)	Jan. 29, 2025	Jan. 06, 2025
Non-plan Options [Member] \| Chief Commercial Officer [Member]
Risk-free interest rate		4.62%
Volatility		97.00%
Expected dividend yield		0.00%
Expected life (in years) (Year)		5 years 9 months 18 days
Risk-free interest rate		4.62%
Volatility		97.00%
Expected dividend yield		0.00%
Expected life (in years) (Year)		5 years 9 months 18 days
Share-Based Payment Arrangement, Nonemployee [Member] \| Share-Based Payment Arrangement, Option [Member]
Risk-free interest rate	4.55%
Volatility	98.00%
Expected dividend yield	0.00%
Expected life (in years) (Year)	5 years 6 months
Risk-free interest rate	4.55%
Volatility	98.00%
Expected dividend yield	0.00%
Expected life (in years) (Year)	5 years 6 months
Share-Based Payment Arrangement, Employee [Member] \| Share-Based Payment Arrangement, Option [Member] \| Vesting in Four Years [Member]
Risk-free interest rate	4.55%
Volatility	97.40%
Expected dividend yield	0.00%
Expected life (in years) (Year)	6 years
Risk-free interest rate	4.55%
Volatility	97.40%
Expected dividend yield	0.00%
Expected life (in years) (Year)	6 years
Share-Based Payment Arrangement, Employee [Member] \| Share-Based Payment Arrangement, Option [Member] \| Vesting in Five Years [Member]
Risk-free interest rate	4.55%
Volatility	98.20%
Expected dividend yield	0.00%
Expected life (in years) (Year)	6 years 6 months
Risk-free interest rate	4.55%
Volatility	98.20%
Expected dividend yield	0.00%
Expected life (in years) (Year)	6 years 6 months
Share-Based Payment Arrangement, Employee [Member] \| Share-Based Payment Arrangement, Option [Member] \| Chief Executive Officer [Member]
Risk-free interest rate	4.55%
Volatility	97.50%
Expected dividend yield	0.00%
Expected life (in years) (Year)	5 years 9 months 18 days
Risk-free interest rate	4.55%
Volatility	97.50%
Expected dividend yield	0.00%
Expected life (in years) (Year)	5 years 9 months 18 days
Share-Based Payment Arrangement, Employee [Member] \| Employee Options with Quarterly Sales [Member]
Risk-free interest rate	4.55%
Volatility	98.40%
Expected dividend yield	0.00%
Expected life (in years) (Year)	5 years 3 months 18 days
Risk-free interest rate	4.55%
Volatility	98.40%
Expected dividend yield	0.00%
Expected life (in years) (Year)	5 years 3 months 18 days
Share-Based Payment Arrangement, Employee [Member] \| Employee Options, Tiered Sales Target [Member]
Risk-free interest rate	4.55%
Volatility	98.00%
Expected dividend yield	0.00%
Expected life (in years) (Year)	5 years 6 months
Risk-free interest rate	4.55%
Volatility	98.00%
Expected dividend yield	0.00%
Expected life (in years) (Year)	5 years 6 months

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over 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 (f)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iv)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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