Annual report pursuant to Section 13 and 15(d)

Subsequent Events (Details)

v3.21.1
Subsequent Events (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended
Feb. 10, 2021
Jan. 28, 2021
Dec. 08, 2020
Dec. 02, 2020
Oct. 28, 2020
Dec. 04, 2019
Mar. 22, 2021
Jan. 31, 2021
Nov. 02, 2020
Jan. 09, 2019
Subsequent Event [Line Items]                    
Consideration received on transaction       $ 2,400 $ 2,900          
Number of shares issued in transaction     50,000   1,600,000 5,000        
Warrants to purchase common stock, issued (shares)         94,000       94,092 31,000
Price for share (usd per share)         $ 2.20 $ 7.86        
Subsequent event                    
Subsequent Event [Line Items]                    
Consideration received on transaction               $ 797    
Number of shares issued in transaction               200,000    
CGI PIPE Purchasers | Subsequent event | Private placement                    
Subsequent Event [Line Items]                    
Consideration received on transaction   $ 8,900                
Number of shares issued in transaction   2,800,000                
Warrants to purchase common stock, issued (shares)   2,800,000                
Price for share (usd per share)   $ 3.625                
Number of shares called by each warrant   1                
Consideration received on transaction, gross   $ 10,000                
Warrants exercised (shares)             1,100,000      
Proceeds from warrant exercises             $ 4,000      
Wainwright | Subsequent event | Private placement                    
Subsequent Event [Line Items]                    
Consideration received on transaction $ 15,800                  
Number of shares issued in transaction 2,800,000                  
Warrants to purchase common stock, issued (shares) 167,000                  
Price for share (usd per share) $ 6.30                  
Consideration received on transaction, gross $ 17,500