Note 10 - Balance Sheet Components (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

Schedule of Accrued Liabilities [Table Text Block]

		March 31,
		2023		2022
Payroll and related	$	1,030	$	801
Clinical		3,383		7,769
Sublease prepayment		233		228
Other		—		42
Total	$	4,646	$	8,840