Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Deficit), Registered Direct Offering (Details)

v3.22.1
Stockholders' Equity (Deficit), Registered Direct Offering (Details)
$ / shares in Units, $ in Thousands
12 Months Ended
Jun. 08, 2021
USD ($)
$ / shares
shares
Nov. 05, 2020
shares
Dec. 31, 2021
USD ($)
shares
Dec. 31, 2020
USD ($)
shares
Registered Direct Offerings [Abstract]        
Shares sold (in shares) | shares   7,091,878    
Gross proceeds | $     $ 28,491 $ 0
Issuance expenses | $     $ 0 $ 1,769
Common Stock [Member]        
Registered Direct Offerings [Abstract]        
Shares sold (in shares) | shares       891,422
Registered Direct Offering [Member]        
Registered Direct Offerings [Abstract]        
Gross proceeds | $ $ 15,000      
Registered Direct Offering [Member] | Warrants [Member]        
Registered Direct Offerings [Abstract]        
Offering price (in dollars per share) | $ / shares $ 0.50      
Exercise price (in dollars per share) | $ / shares $ 6.09      
Expiration period 5 years      
Fair value of warrants | $ $ 6,400      
Warrants outstanding (in shares) | shares     1,538,461  
Minimum percentage of beneficial ownership     4.99%  
Maximum percentage of beneficial ownership limitation     9.99%  
Registered Direct Offering [Member] | Common Stock [Member]        
Registered Direct Offerings [Abstract]        
Shares sold (in shares) | shares 3,076,923      
Warrants issued (in shares) | shares 1,538,461      
Offering price (in dollars per share) | $ / shares $ 4.875      
Issuance expenses | $ $ 1,100      
Registered Direct Offering [Member] | Risk-Free Interest Rate [Member] | Warrants [Member]        
Registered Direct Offerings [Abstract]        
Measurement input 0.008      
Registered Direct Offering [Member] | Expected Volatility [Member] | Warrants [Member]        
Registered Direct Offerings [Abstract]        
Measurement input 0.992      
Registered Direct Offering [Member] | Expected Dividend Yield Rate [Member] | Warrants [Member]        
Registered Direct Offerings [Abstract]        
Measurement input 0      
Registered Direct Offering [Member] | Expected Term [Member] | Warrants [Member]        
Registered Direct Offerings [Abstract]        
Expected life     5 years