Note 7 - Leases (Details Textual)	1 Months Ended
	Sep. 30, 2022	Feb. 28, 2022	Sep. 30, 2021	Jun. 30, 2024	Dec. 31, 2023
Number of Real Estate Leases				3
Operating Lease, Weighted Average Discount Rate, Percent				9.60%	9.60%
Operating Lease, Weighted Average Remaining Lease Term (Year)				5 years 10 months 24 days	6 years 4 months 24 days
Finance Lease, Weighted Average Discount Rate, Percent					11.00%
Finance Lease, Weighted Average Remaining Lease Term (Year)					4 months 24 days
Lease for Laboratory Space [Member]
Lessee, Operating Lease, Term of Contract (Year)		7 years	10 years
Lessee, Operating Lease, Option To Extend Period (Year)	5 years	10 years	10 years
Lessee, Operating Lease, Renewal Term (Year)	7 years