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Summary of Significant Accounting Policies - Narrative (Details) $ / shares in Units, $ in Millions | 1 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 USD ($) $ / shares shares | Sep. 30, 2021 $ / shares shares
Subsidiary, Sale of Stock [Line Items] |  |
Share price (in dollars per share) | $ / shares | $ 25.00 | $ 25.00
Payments for underwriting discount and commissions | $ | $ 13.2 |
Payments of stock issuance costs | $ | $ 2.9 |
Convertible preferred stock, shares, number of shares issued upon conversion (in shares) | shares | 29,912,264 | 29,912,264
Additional Paid-in Capital |  |
Subsidiary, Sale of Stock [Line Items] |  |
Conversion of redeemable convertible preferred stock to common stock upon initial public offering | $ | $ 329.5 |
Common Stock Warrants | Series E, Redeemable Convertible Preferred Stock Warrants |  |
Subsidiary, Sale of Stock [Line Items] |  |
Issuance upon exercise of warrants (in shares) | shares |  | 62,454
Common Stock | IPO |  |
Subsidiary, Sale of Stock [Line Items] |  |
Sale of stock, number of shares issued in transaction (in shares) | shares | 6,556,000 |
Sale of stock, consideration received on transaction | $ | $ 172.4 |
Common Stock | Over-Allotment Option |  |
Subsidiary, Sale of Stock [Line Items] |  |
Sale of stock, number of shares issued in transaction (in shares) | shares | 983,400 |

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