Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Equity Offerings (Details)

v3.22.2.2
Stockholders' Equity - Equity Offerings (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 9 Months Ended
Apr. 30, 2022
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Dec. 31, 2020
Apr. 30, 2019
Jan. 31, 2019
Stockholders' Equity              
Common stock authorized (in shares)   200,000,000   200,000,000      
Preferred stock authorized (in shares)   5,000,000   5,000,000      
Net proceeds from the offering     $ 7,948        
Warrants outstanding (in shares)   5,275,430          
R-Bridge Financing | Royalty Based Loan Agreement              
Stockholders' Equity              
Warrants to purchase shares of common stock 5,000,000            
Warrants term 3 years            
Exercise price (in dollars per share) $ 0.82            
R-Bridge Financing | Royalty Based Loan Agreement - First Tranche              
Stockholders' Equity              
Proceeds from royalty-based loan agreement $ 15,000            
Wainwright              
Stockholders' Equity              
Warrants to purchase shares of common stock             500,000
Warrants term             5 years
Exercise price (in dollars per share)             $ 1.25
Warrants outstanding (in shares)   172,500          
At-the-market sales facility - April 17, 2019 agreement | Wainwright | Maximum              
Stockholders' Equity              
Offering amount           $ 50,000  
At-the-market sales facility - December 31, 2020 agreement | Wainwright              
Stockholders' Equity              
Offering amount         $ 50,000    
HCW ATM Program              
Stockholders' Equity              
Net proceeds from the offering   $ 0          
Stock available for further issuance   $ 41,900