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Stockholders' Equity - Preferred Stock (Details) | Dec. 31, 2021 series $ / shares shares | Dec. 31, 2020 $ / shares shares
--- | --- | ---
Preferred Stock |  |
Preferred stock, authorized (in shares) | 5,000,000 |
Preferred stock, par value (in dollars per share) | $ / shares | $ 0.001 | $ 0.001
Preferred stock, issued (in shares) | 0 | 0
Preferred stock, outstanding (in shares) | 0 | 0
Minimum number of series used to issue preferred stock | series | 1 |
Number of shares of common stock into which each share of Series X Preferred Stock may be converted | 166.67 |
Series X redeemable convertible preferred stock |  |
Preferred Stock |  |
Preferred stock, authorized (in shares) | 91,380 | 91,380
Preferred stock, par value (in dollars per share) | $ / shares | $ 0.001 | $ 0.001
Preferred stock, issued (in shares) | 31,455 | 0
Preferred stock, outstanding (in shares) | 31,455 | 0
Number of shares of common stock into which each share of Series X Preferred Stock may be converted | 166.67 |
Number of common shares issuable upon conversion of preferred stock (in shares) | 5,242,501 |

X
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