Quarterly report pursuant to Section 13 or 15(d)

The Company and Basis of Presentation - Narrative (Details)

v3.21.2
The Company and Basis of Presentation - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 9 Months Ended
Nov. 12, 2021
Sep. 30, 2021
Sep. 30, 2020
Oct. 22, 2021
Feb. 28, 2021
Dec. 31, 2020
Jul. 15, 2020
Subsidiary, Sale of Stock [Line Items]              
Warrants Outstanding (in shares)   7,676,112       5,996,112  
Proceeds from sales of common stock, net of issuance costs   $ 32,610 $ 1,341        
Warrants              
Subsidiary, Sale of Stock [Line Items]              
Warrants Outstanding (in shares)         3,840,000   2,160,000
Warrants | Common Stock              
Subsidiary, Sale of Stock [Line Items]              
Exercise price per share (in dollars per share)         $ 2.25   $ 4.00
At Market Issuance Sales Agreement              
Subsidiary, Sale of Stock [Line Items]              
Proceeds from sales of common stock, net of issuance costs   $ 3,052          
Subsequent Event              
Subsidiary, Sale of Stock [Line Items]              
Proceeds from sales of common stock, net of issuance costs $ 66,696            
Subsequent Event | Warrants              
Subsidiary, Sale of Stock [Line Items]              
Proceeds from sales of common stock, net of issuance costs 4,635            
Subsequent Event | Warrants | Common Stock              
Subsidiary, Sale of Stock [Line Items]              
Exercise price per share (in dollars per share)       $ 2.25      
Subsequent Event | At Market Issuance Sales Agreement              
Subsidiary, Sale of Stock [Line Items]              
Proceeds from sales of common stock, net of issuance costs $ 62,061