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v3.21.2

Debt - Convertible Notes (Details) - USD ($) $ / shares in Units, $ in Millions |  |  |  | 3 Months Ended | 7 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 01, 2021 | Jan. 16, 2020 | Mar. 29, 2019 | Jun. 30, 2019 | Jan. 16, 2020 | Dec. 31, 2020 | Sep. 30, 2021 | Jun. 11, 2020
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Common stock, par value (USD per share) |  |  |  |  |  | $ 0.0001 | $ 0.0001 | $ 0.0001
Convertible Debt |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Proceeds from issuance of subordinated convertible promissory notes |  |  | $ 1.7 |  |  |  |  |
Interest rate on convertible notes |  |  |  | 5.00% | 10.00% |  |  |
Accumulated interest on subordinated debt |  | $ 0.1 |  |  | $ 0.1 |  |  |
Net proceeds from the conversion of convertible debt to preferred stock |  | $ 1.8 |  |  |  |  |  |
Conversion rate (USD per share) |  | $ 0.67 |  |  | $ 0.67 |  |  |
Conversion of notes to stock (in shares) |  | 2,709,018 |  |  |  |  |  |
Common stock, par value (USD per share) |  | $ 0.0001 | $ 0.0001 |  | $ 0.0001 |  |  |
Convertible Debt | Preferred Stock |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Preferred stock converted to common stock (in shares) | 1,721,023 |  |  |  |  | 111,548 |  |
Convertible Debt | Common Stock |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Common stock issued upon preferred stock conversion (in shares) | 344,205 |  |  |  |  | 22,310 |  |

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