Quarterly report pursuant to Section 13 or 15(d)

Liquidity, Plan of Operations and Going Concern (Details Narrative)

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Liquidity, Plan of Operations and Going Concern (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended
Apr. 05, 2024
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Dec. 31, 2022
Accumulated deficit   $ 181,397   $ 175,573  
Net loss   5,824 $ 5,513    
Cash and cash equivalents   1,071 5,739 4,787 $ 6,830
Marketable securities   7,039   8,969  
Restricted cash   $ 250 $ 250 $ 250 $ 250
Subsequent Event [Member]          
Net proceeds from issuance of stock $ 9,250