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Note 12 - Share-based Compensation (Details Textual) - shares			3 Months Ended
	May 18, 2022	Dec. 03, 2021	Mar. 31, 2025	May 22, 2024
Common Stock, Capital Shares Reserved for Future Issuance (in shares)			8,193,168
Deferred Share Units [Member]
Common Stock, Capital Shares Reserved for Future Issuance (in shares)			322,057
Restricted Stock Units (RSUs) [Member]
Common Stock, Capital Shares Reserved for Future Issuance (in shares)			11,410
The 2019 Omnibus Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)				7,000,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)			4,062,932
Common Stock, Capital Shares Reserved for Future Issuance (in shares)			2,450,859
The 2019 Omnibus Incentive Plan [Member] \| Employee and Non-employee Stock Options [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)	10 years
The 2019 Omnibus Incentive Plan [Member] \| Employee and Non-employee Stock Options [Member] \| Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)	1 year
The 2019 Omnibus Incentive Plan [Member] \| Employee and Non-employee Stock Options [Member] \| Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)	4 years
The 2019 Omnibus Incentive Plan [Member] \| Nonemployee Stock Options [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)	5 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)	1 year
The 2019 Omnibus Incentive Plan [Member] \| Deferred Share Units [Member]
Common Stock, Capital Shares Reserved for Future Issuance (in shares)			304,724
The 2019 Omnibus Incentive Plan [Member] \| Restricted Stock Units (RSUs) [Member]
Common Stock, Capital Shares Reserved for Future Issuance (in shares)			11,410
The 2021 Employment Inducement Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)		10 years
Common Stock, Capital Shares Reserved for Future Issuance (in shares)			357,500
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number			590,000
Stock Option Prior Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number			398,410
The 2012 DSU Plan [Member]
Common Stock, Capital Shares Reserved for Future Issuance (in shares)			17,333