v3.22.2.2
Stockholders' Equity (Deficit) - Additional Information (Details)
 1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2022
USD ($)
Pre-fundedWarrant
$ / shares
shares
Sep. 30, 2018
Sep. 30, 2022
USD ($)
shares
Jun. 30, 2022
$ / shares
shares
Mar. 31, 2022
shares
Sep. 30, 2022
USD ($)
shares
Dec. 31, 2021
shares
Class Of Stock [Line Items]              
Conversion of warrants to purchase shares     6,987,785     6,987,785  
Warrants exercised             0
Cashless exercise of pre-funded warrants to purchase common stock       176,554   176,554  
2022 Pre-Funded Warrants and Common Warrants              
Class Of Stock [Line Items]              
Maximum percentage of holders ownership interest in common stock after exercise 19.99%            
Number of amended pre-funded warrants | Pre-fundedWarrant 2            
Common Stock              
Class Of Stock [Line Items]              
Issuance of common stock upon cashless exercise of pre-funded warrants       0 170,668 170,668  
Common Stock | Equity Plan Activity              
Class Of Stock [Line Items]              
Shares issued upon exercise of outstanding stock options     0     0 3,727
Shares issued upon vesting of restricted stock units     0     0  
Shares issued in connection with employee stock purchase plan     23,461     23,461 36,687
Common Stock | Equity Plan Activity | Restricted Stock Units              
Class Of Stock [Line Items]              
Shares withheld on vesting date to settle employees minimum statutory tax obligations             0
Shares issued upon vesting of restricted stock units             0
Common Stock | Direct Offerings              
Class Of Stock [Line Items]              
Net proceeds received from issuance direct offering | $ $ 3,900,000            
Common Stock | Capital on Demand Sales Agreement | Jones Trading Institutional Services LLC              
Class Of Stock [Line Items]              
Maximum aggregate value of stock to be sold | $     $ 50,000,000.0     $ 50,000,000.0  
Remaining amount available under the Sales Agreement | $     $ 47,400,000     $ 47,400,000  
Percentage of gross proceeds, required to pay for common stock sold through sales agreement   2.50%          
Common Stock | 2022 Pre-Funded Warrants | Direct Offerings              
Class Of Stock [Line Items]              
Exercise price (per share) | $ / shares $ 0.01     $ 0.01      
Common Stock | Purchase Price of $1.32 Per Share | Direct Offerings              
Class Of Stock [Line Items]              
Common stock issued and sold 841,989            
Common stock purchase price per share | $ / shares $ 1.32     1.32      
Common Stock | Purchase Price of $1.31 Per Share | 2022 Pre-Funded Warrants | Direct Offerings              
Class Of Stock [Line Items]              
Common stock purchase price per share | $ / shares $ 1.31     $ 1.31      
Conversion of warrants to purchase shares 2,205,018     2,205,018