Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Going Concern Uncertainty (Details Narrative)

v3.23.1
Basis of Presentation and Going Concern Uncertainty (Details Narrative) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2022
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Net loss $ 4,386 $ 4,811    
Net cash used in operating activities 4,802 5,246    
Cash and cash equivalents 8,648     $ 14,042
Accumulated deficit 145,737     $ 141,351
Proceeds from issuance of common stock $ 121 $ 3,116    
Equity Distribution Agreement [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Number of common stock sold, shares 119      
Proceeds from issuance of common stock $ 102      
Proceeds from net of issuance costs $ 19      
Equity Distribution Agreement [Member] | Maximum [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Aggregate of offering cost     $ 25,000