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Note 11 - Commitments and Contingencies (Details Textual) $ in Thousands		12 Months Ended		18 Months Ended	42 Months Ended
	Sep. 27, 2024 USD ($) ft²	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2024 USD ($)	Jun. 30, 2023	Jan. 01, 2021	Dec. 31, 2020
Operating Lease, Right-of-Use Asset		$ 6,731	$ 1,776	$ 6,731
Defined Contribution Plan, Cost		$ 300	300
Maximum [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay				6.00%	4.00%
Facility Lease [Member]
Lessee, Operating Lease, Discount Rate		6.25%		6.25%
Number of Operating Leases							1
Lessee, Operating Lease, Term of Contract						4 years 4 months 30 days
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		$ 6,700		$ 6,700
Lessee, Operating Lease, Remaining Lease Term		6 years 4 months 24 days		6 years 4 months 24 days
Operating Lease, Cost		$ 1,100	1,300
Operating Lease, Payments		1,400	$ 1,300
Facility Lease [Member] | Financial Standby Letter of Credit [Member]
Restricted Cash		$ 568		$ 568

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-Topic 715
-SubTopic 70
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
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Discount rate used by lessee to determine present value of operating lease payments.

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Remaining lease term of operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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