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Note 13 - Income Taxes - Significant Components of Deferred Tax Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Federal net operating loss carryforwards	$ 16,775	$ 13,760
State net operating loss carryforwards	5,063	3,719
Research and development credits	9,252	6,387
Section 174 Capitalization	22,724	15,525
Share-based compensation	3,922	2,701
Lease liabilities	1,812	474
Capitalized licensing fees	1,375	1,484
Other	494	234
Subtotal	61,417	44,284
Less valuation allowance	(59,521)	(43,799)
Deferred tax assets, net of valuation allowance	1,896	485
Right-of-use assets	(1,839)	(485)
Other	(57)	0
Net deferred tax assets	$ 0	$ 0

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