Note 6 - Accrued Expenses and Other Current Liabilities (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

Schedule of Accrued Liabilities and Other Current Liabilities [Table Text Block]

	June 30,		December 31,
	2022		2021
Accrued expenses	$	29	$	240
Accrued salaries and employee benefits		734		861
Accrued clinical trial costs		301		334
Grant liability		562		590
Customer deposits		90		96
Payable to related party		47		—
Total	$	1,763	$	2,121