Note 5 - Leases - Lease Cost and Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Operating lease cost	$ 157,000	$ 21,000
Sublease income	(15,000)	0
Total lease cost	142,000	21,000
Cash paid for amounts included in the measurement of lease liabilities - Operating leases	$ 655,000	$ 21,000
Weighted-average remaining lease term - Operating leases in years (Year)	14 years 8 months 12 days	8 months 1 day
Weighted-average discount rate - Operating leases	8.25%	4.42%