Note 3 - Fair Value Measurement (Tables)

6 Months Ended

Jun. 30, 2023

Notes Tables

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

	As of June 30, 2023
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	20	$	—	$	—	$	20
Cash in savings account		—		—		—		3,886
Cash in checking account		—		—		—		399
Total cash and cash equivalents	$	20	$	—	$	—	$	4,305

	As of December 31, 2022
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	6,893	$	—	$	—	$	6,893
Cash in checking account		—		—		—		470
Total cash and cash equivalents	$	6,893	$	—	$	—	$	7,363