Note 7 - Commitments and Contingencies (Details Textual) $ in Thousands	2 Months Ended	3 Months Ended
	Sep. 27, 2024 USD ($) ft²	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($)	Jan. 01, 2021	Dec. 31, 2020
Operating Lease, Right-of-Use Asset		$ 6,507		$ 6,731
Restricted Cash		568		$ 568
Defined Contribution Plan, Cost		$ 100	$ 100
Maximum [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay		6.00%
Facility Lease [Member]
Lessee, Operating Lease, Discount Rate		6.25%
Number of Operating Leases						1
Lessee, Operating Lease, Term of Contract (Year)					4 years 5 months 1 day
Area of Real Estate Property | ft²	10,724
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 6,100
Operating Lease, Right-of-Use Asset		$ 6,500
Lessee, Operating Lease, Remaining Lease Term		5 years 7 months 6 days
Operating Lease, Cost		$ 300	300
Operating Lease, Payments		$ 300	$ 300
Facility Lease [Member] | Financial Standby Letter of Credit [Member]
Restricted Cash	$ 568