Stockholders' Equity - Shares Reserved for Future Issuance (Details) - shares	Dec. 31, 2021	Dec. 31, 2020
Stockholders' Equity
Number of shares reserved for future issuance	9,784,254	1,607,657
Series X Preferred Stock
Stockholders' Equity
Number of shares reserved for future issuance	5,242,501
Warrants for the purchase of common Stock
Stockholders' Equity
Number of shares reserved for future issuance	1,530,380	1,032,291
Options outstanding to purchase common Stock
Stockholders' Equity
Number of shares reserved for future issuance	1,346,733	227,846
Options available for future issuance to purchase common stock
Stockholders' Equity
Number of shares reserved for future issuance	1,633,736	322,695
Shares reserved for the employee stock purchase plan
Stockholders' Equity
Number of shares reserved for future issuance	30,904	24,825