Note 4 - Balance Sheet Components (Tables)

6 Months Ended

Jun. 30, 2025

Notes Tables

Property, Plant and Equipment [Table Text Block]

	June 30,			December 31,
	2025			2024
Leasehold improvements	$	2,519		$	2,519
Laboratory equipment		1,482			1,342
Furniture, fixtures and equipment		966			966
Software		283			272
Construction in progress		50			29
Total property and equipment		5,300			5,128
Less: Accumulated depreciation and amortization		(4,191	)		(3,968	)
Total property and equipment, net	$	1,109		$	1,160

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	June 30,			December 31,
	2025			2024
Acquired patents and licenses	$	8,005		$	7,985
Less: Accumulated amortization		(7,098	)		(6,765	)
Total intangible assets, net	$	907		$	1,220

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Years ending December 31:
2025 (remaining 6 months)	$	332
2026		575
Total	$	907

Schedule of Accrued Liabilities [Table Text Block]

	June 30,		December 31,
	2025		2024
Compensation expense	$	3,473	$	4,097
Professional fees		659		564
Clinical trial fees and costs		433		284
Other		212		188
Legal settlement		—		1,196
Severance		—		698
Total accrued expenses	$	4,777	$	7,027