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Common Stock (Tables)
 12 Months Ended
Dec. 31, 2022
Equity [Abstract]  
Shares Reserved for Future Issuance Shares reserved for future issuance as of December 31, 2022 are as follows:
 Number of
Shares
Common stock reserved for issuance for:
2021 Employee stock purchase plan116,891 
Prefunded stock warrants5,096,552 
Outstanding stock options3,791,688 
Common stock options available for future grant:
2014 Equity Incentive Plan43,311 
2017 Inducement Equity Incentive Plan46,250 
2019 Omnibus Equity Incentive Plan188,655 
Total common shares reserved for future issuance9,283,347