XML 33 R24.htm IDEA: XBRL DOCUMENT v3.23.1
Liquidity and Going Concern - Additional Information (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended
Nov. 22, 2022
May 24, 2022
$ / shares
Mar. 31, 2023
USD ($)
Mar. 31, 2022
USD ($)
Dec. 31, 2022
USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Net loss     $ (4,805) $ (4,116)  
Accumulated deficit     (471,990)   $ (467,185)
Net cash used in operating activities     $ (5,793) $ (3,876)  
Closing bid price for common stock had fallen below | $ / shares   $ 1.00      
Consecutive business days   30 days      
Period for regain compliance 180 days        
Regain compliance expiry date May 22, 2023        
Maximum [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Stock split conversion ratio     0.06    
Reverse stock split     one-for-fifteen    
Minimum [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Stock split conversion ratio     0.33    
Reverse stock split     one-for-three