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Convertible Preferred Stock (Details) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jan. 31, 2015 | Dec. 31, 2020 USD ($) $ / shares shares | Sep. 30, 2021 USD ($) $ / shares shares
Class of Stock [Line Items] |  |  |
Preferred stock, shares authorized |  | 29,626,090 | 29,626,090
Preferred stock, shares issued |  | 29,626,090 | 29,626,090
Preferred stock, shares outstanding |  | 29,626,090 | 29,626,090
Liquidation Value | $ |  | $ 496,970,324,000 | $ 496,970,324,000
Proceeds received from initial public offering, gross | $ |  | $ 100,000,000 |
Stock spilt ratio | 10 |  |
Series A |  |  |
Class of Stock [Line Items] |  |  |
Preferred stock, shares authorized |  | 3,500,000 | 3,500,000
Preferred stock, shares issued |  | 3,500,000 | 3,500,000
Preferred stock, shares outstanding |  | 3,500,000 | 3,500,000
Issue Price | $ / shares |  | $ 1.0000 | $ 1.0000
Liquidation Value | $ |  | $ 3,500,000 | $ 3,500,000
Conversion price | $ / shares |  | $ 0.10 |
Series A-1 |  |  |
Class of Stock [Line Items] |  |  |
Preferred stock, shares authorized |  | 3,800,515 | 3,800,515
Preferred stock, shares issued |  | 3,800,515 | 3,800,515
Preferred stock, shares outstanding |  | 3,800,515 | 3,800,515
Issue Price | $ / shares |  | $ 0.1579 | $ 0.1579
Liquidation Value | $ |  | $ 600,101 | $ 600,101
Conversion price | $ / shares |  | $ 0.02 |
Series B |  |  |
Class of Stock [Line Items] |  |  |
Preferred stock, shares authorized |  | 4,401,242 | 4,401,242
Preferred stock, shares issued |  | 4,401,242 | 4,401,242
Preferred stock, shares outstanding |  | 4,401,242 | 4,401,242
Issue Price | $ / shares |  | $ 1.8177 | $ 1.8177
Liquidation Value | $ |  | $ 8,000,138 | $ 8,000,138
Conversion price | $ / shares |  | $ 0.18 |
Series C |  |  |
Class of Stock [Line Items] |  |  |
Preferred stock, shares authorized |  | 5,024,637 | 5,024,637
Preferred stock, shares issued |  | 5,024,637 | 5,024,637
Preferred stock, shares outstanding |  | 5,024,637 | 5,024,637
Issue Price | $ / shares |  | $ 3.0848 | $ 3.0848
Liquidation Value | $ |  | $ 15,500,000 | $ 15,500,000
Conversion price | $ / shares |  | $ 0.31 |
Series D |  |  |
Class of Stock [Line Items] |  |  |
Preferred stock, shares authorized |  | 2,412,718 | 2,412,718
Preferred stock, shares issued |  | 2,412,718 | 2,412,718
Preferred stock, shares outstanding |  | 2,412,718 | 2,412,718
Issue Price | $ / shares |  | $ 8.0283 | $ 8.0283
Liquidation Value | $ |  | $ 19,370,024 | $ 19,370,024
Conversion price | $ / shares |  | $ 0.80 |
Series E |  |  |
Class of Stock [Line Items] |  |  |
Preferred stock, shares authorized |  | 1,605,982 | 1,605,982
Preferred stock, shares issued |  | 1,605,982 | 1,605,982
Preferred stock, shares outstanding |  | 1,605,982 | 1,605,982
Issue Price | $ / shares |  | $ 31.1336 | $ 31.1336
Liquidation Value | $ |  | $ 50,000,001 | $ 50,000,001
Conversion price | $ / shares |  | $ 3.11 |
Series F Preferred Stock |  |  |
Class of Stock [Line Items] |  |  |
Preferred stock, shares authorized |  | 4,440,498 | 4,440,498
Preferred stock, shares issued |  | 4,440,498 | 4,440,498
Preferred stock, shares outstanding |  | 4,440,498 | 4,440,498
Issue Price | $ / shares |  | $ 45.0400 | $ 45.0400
Liquidation Value | $ |  | $ 200,000,030 | $ 200,000,030
Conversion price | $ / shares |  | $ 4.50 |
Convertible ratio |  | 1 |
Series F-1 |  |  |
Class of Stock [Line Items] |  |  |
Conversion price | $ / shares |  | $ 4.50 |
Series G |  |  |
Class of Stock [Line Items] |  |  |
Preferred stock, shares authorized |  | 4,440,498 | 4,440,498
Preferred stock, shares issued |  | 4,440,498 | 4,440,498
Preferred stock, shares outstanding |  | 4,440,498 | 4,440,498
Issue Price | $ / shares |  | $ 45.0400 | $ 45.0400
Liquidation Value | $ |  | $ 200,000,030 | $ 200,000,030
Conversion price | $ / shares |  | $ 4.50 |
Convertible ratio |  | 1 |
Series G-1 |  |  |
Class of Stock [Line Items] |  |  |
Conversion price | $ / shares |  | $ 4.50 |

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