XML 44 R34.htm IDEA: XBRL DOCUMENT v3.23.1
Note 6 - Accrued Expenses and Other Current Liabilities - Summary of Accrued Expenses and Other Current Liabilities (Details) - USD ($)
Mar. 31, 2023
Dec. 31, 2022
Accrued expenses $ 38,000 $ 157,000
Accrued salaries and employee benefits 1,100,000 899,000
Accrued clinical trial costs 693,000 548,000
Grant liability 518,000 534,000
Customer deposits 90,000 90,000
Total 2,472,000 2,246,000
Related Party [Member]    
Payable to related party $ 33,000 $ 18,000