Note 15 - Income Taxe3 (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	December 31,
	2023			2022
Statutory rate		21.0	%		21.0	%
State taxes		7.9	%		5.6	%
Share-based compensation & other nondeductible expenses		1.5	%		-2.7	%
Research credits		7.3	%		1.4	%
Other		-0.6	%		-0.1	%
Change in valuation allowance		-37.1	%		-25.2	%
Total		0.0	%		0.0	%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	December 31,
	2023			2022
Deferred tax assets	(000's)
Federal net operating loss carryforwards	$	13,760		$	12,405
State net operating loss carryforwards		3,719			2,687
Research and development credits		6,387			3,273
Section 174 Capitalization		15,525			7,294
Share-based compensation		2,701			701
Lease liabilities		474			801
Capitalized licensing fees		1,484			1,591
Other		234			70
Subtotal		44,284			28,822
Less valuation allowance		(43,799	)		(28,013	)
Deferred tax assets, net of valuation allowance		485			809
Deferred tax liabilities
Right-of-use assets		(485	)		(809	)
Other		—			—
Net deferred tax assets	$	—		$	—