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Stockholders' Equity - Additional Information (Details) - USD ($)
1 Months Ended 2 Months Ended 12 Months Ended
Jul. 21, 2021
Nov. 06, 2020
Aug. 03, 2020
Aug. 03, 2020
Jul. 30, 2020
Apr. 05, 2019
Jan. 31, 2022
Jun. 30, 2020
Dec. 31, 2021
Dec. 31, 2020
Jun. 30, 2018
May 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Number of common shares authorized (in shares)                 300,000,000 300,000,000 300,000,000 175,000,000
Preferred stock, shares authorized (in shares)                 5,000,000 5,000,000    
Granted (in shares)                 2,397,684 2,032,000    
Preferred stock, shares outstanding (in shares)                 0 0    
Shares sold in public offering (in shares)     24,916,667                  
Net proceeds     $ 69,700,000                  
Underwriting discounts and offering expenses       $ 5,000,000                
Tom Riga | Subsequent Event                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Granted (in shares)             1,078,500          
Public Offering                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Shares sold in public offering (in shares)         21,666,667              
Shares sold in public offering (in dollars per share)         $ 3.00              
Net proceeds         $ 61,100,000              
Over-Allotment Option                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Shares sold in public offering (in shares)       3,250,000 3,250,000              
Shares sold in public offering (in dollars per share)     $ 3.00 $ 3.00                
Net proceeds       $ 9,200,000                
April 2019 ATM Agreement                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Maximum proceeds to be raised   $ 60,000,000       $ 150,000,000   $ 75,000,000        
Registration Statement, July 2021                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Maximum proceeds to be raised $ 300,000,000                      
Registration Statement, July 2021 | Common Stock                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Maximum proceeds to be raised $ 150,000,000                      
Stock options                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Shares of common stock issuable upon conversion or exercise of rights granted (in shares)                 6,400,000      
Stock options | Subsequent Event                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting percent             33.333%          
Restricted Stock Units                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Granted (in shares)                 2,125 6,800    
Shares of common stock issuable upon conversion or exercise of rights granted (in shares)                 400,000      
Restricted Stock Units | Subsequent Event                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting percent             33.333%          
Restricted Stock Units | Tom Riga | Subsequent Event                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Granted (in shares)             239,500