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Stockholders' Equity - Common Stock Reserved for Future Issuance (Details) | 9 Months Ended
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Sep. 30, 2021 shares
Class of Stock [Line Items] |
Common Stock Reserved for Future Issuance | 17,813,319
Common stock issued upon conversion of senior notes | 4,810,002
Stock Options [Member] |
Class of Stock [Line Items] |
Common Stock Reserved for Future Issuance | 7,358,115
Warrants [Member] |
Class of Stock [Line Items] |
Common stock issued upon conversion of senior notes | 17,800,000
Class C convertible preferred stock |
Class of Stock [Line Items] |
Common Stock Reserved for Future Issuance | 5,283,411
Restricted stock units |
Class of Stock [Line Items] |
Common Stock Reserved for Future Issuance | 361,791

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