Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Narrative (Details)

v3.21.1
Stockholders' Equity - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 20 Months Ended
Jun. 23, 2020
Apr. 01, 2020
Mar. 31, 2020
Aug. 31, 2019
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2021
Dec. 31, 2020
Class of Stock [Line Items]                
Common stock, shares authorized (in shares)         300,000,000   300,000,000 300,000,000
Common stock, shares issued (in shares)         59,718,989   59,718,989 56,002,815
Common stock, shares outstanding (in shares)         59,718,989   59,718,989 56,002,815
Par value of common stock (USD per share)         $ 0.001   $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares)         10,000,000   10,000,000 10,000,000
Preferred stock, shares issued (in shares)         14,429   14,429 14,429
Preferred stock, shares outstanding (in shares)         14,429   14,429 14,429
Par value of preferred stock (USD per share)         $ 0.001   $ 0.001 $ 0.001
Issuance of common stock, net of issuance costs       $ 50,000 $ 9,673 $ 0    
2020 Plan                
Class of Stock [Line Items]                
Shares of stock authorized pursuant to the 2020 Plan (shares) 3,500,000              
2019 Plan                
Class of Stock [Line Items]                
Shares of stock terminated under the 2019 Plan (shares) 1,579,678              
At the market offering                
Class of Stock [Line Items]                
Shares of stock sold, net consideration             $ 10,000  
Common Stock | Stock exchange, shares from existing shareholders                
Class of Stock [Line Items]                
Shares of stock sold (in shares)   3,000,000            
Preferred Stock | Preferred share exchange                
Class of Stock [Line Items]                
Shares of stock sold (in shares)   3,000            
Series A Preferred Stock                
Class of Stock [Line Items]                
Preferred stock, shares issued (in shares)         2,907   2,907 2,907
Preferred stock, shares outstanding (in shares)         2,907   2,907 2,907
Series B Preferred Stock                
Class of Stock [Line Items]                
Preferred stock, shares issued (in shares)         5,000   5,000 5,000
Preferred stock, shares outstanding (in shares)         5,000   5,000 5,000
Series C Preferred Stock                
Class of Stock [Line Items]                
Preferred stock, shares issued (in shares)         3,522   3,522 3,522
Preferred stock, shares outstanding (in shares)         3,522   3,522 3,522
Series D Preferred Stock                
Class of Stock [Line Items]                
Preferred stock, shares issued (in shares)         3,000   3,000 3,000
Preferred stock, shares outstanding (in shares)         3,000   3,000 3,000
Series D Preferred Stock | Preferred Stock                
Class of Stock [Line Items]                
Preferred stock, shares authorized (in shares)   3,000            
Par value of preferred stock (USD per share)     $ 0.001     $ 0.001    
Stock issued upon conversion (shares)     1,000     1,000    
Common stock ownership limit (as a percent)     9.99%     9.99%    
Beneficial ownership limitation (as a percent)     19.99%     19.99%    
Notice period before increase of Beneficial Ownership Limitation     61 days