Annual report pursuant to Section 13 and 15(d)

Liquidity and Plan of Operations (Details Narrative)

v3.22.4
Liquidity and Plan of Operations (Details Narrative) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Deferred Compensation Arrangement with Individual, Excluding Share-Based Payments and Postretirement Benefits [Line Items]    
Accumulated deficit $ (152,631) $ (131,634)
Cash and cash equivalents 6,830  
Marketable securities 21,933 28,592
Restricted cash 250  
Management [Member]    
Deferred Compensation Arrangement with Individual, Excluding Share-Based Payments and Postretirement Benefits [Line Items]    
Accumulated deficit 152,631  
Net loss $ 20,997 $ 23,283