Note 16 - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Net operating loss carryforwards	$ 12,358	$ 24,829
Stock-based compensation	15	49
Capitalized research and development	896	1,201
Intangible assets	41	53
Operating lease liabilities	25	44
Accrued compensation	5	2
Other accruals	3	0
Fixed asset basis	3	0
R&D credits	0	589
Total gross deferred tax assets	13,346	26,767
Fixed asset basis	0	(1)
Operating lease right-of-use assets	(24)	(42)
Intangible assets	(5,506)	(6,216)
Total gross deferred tax liabilities	(5,530)	(6,259)
Valuation allowance	(10,957)	(20,508)
Net deferred tax liabilities	$ (3,141)	$ 0