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Share-Based Payment (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Sep. 30, 2021 | Jul. 21, 2021 | Oct. 30, 2015 | Sep. 30, 2021 | Sep. 30, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Share-Based Payment (Details) [Line Items] |  |  |  |  |  |  |  |
Vesting value per share (in Dollars per share) |  |  |  |  |  | $ 6,280 |  |
Fair value repurchased (in Dollars) |  |  |  |  |  | $ 7,974 |  |
Issued and outstanding |  |  |  |  |  | 8,546,502 | 8,546,502 | 8,546,502
Total issued and outstanding percentage |  |  |  |  | 17.00% |  |  |
Granted options |  |  |  |  | 209,906 |  |  |
Granted options non-vested shares |  |  |  |  | 143,652 |  |  |
Converted options |  |  |  |  | 33,647,927 |  |  |
Converted options non-vested shares |  |  |  |  | 23,027,399 |  |  |
Common exchange ratio (in Dollars per share) |  |  |  |  | $ 160.3 | $ 160.3 |  |
Plan expire date |  | 10 years |  |  |  |  |  |
Reserves percentage |  | 5.00% |  |  |  |  |  |
Common stock |  |  |  |  | 76,956,754 |  |  |
Stock option (in Dollars) |  |  |  |  | $ 150,200 |  |  |
Weighted-average period |  |  |  |  | 8 years 2 months 12 days |  |  |
Aggregate intrinsic value (in Dollars) |  |  |  |  | $ 68,267 |  |  |
Stock-based compensation expense (in Dollars) |  |  |  |  | 8,800 |  |  |
Equity-based compensation costs (in Dollars) | $ 135,700 |  |  | $ 135,700 | 135,700 |  |  |
Compensation cost (in Dollars) |  |  |  |  | 1,600 |  |  |
Fair market value percentage |  |  | 70.00% |  |  |  |  |
Common stock, however shares | 8,546,502 |  |  |  |  |  |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |
Share-Based Payment (Details) [Line Items] |  |  |  |  |  |  |  |
Compensation expense (in Dollars) |  |  |  |  | $ 135 |  |  |
Granted |  |  |  |  | 133,981 |  |  |
Phantom Share Units (PSUs) [Member] |  |  |  |  |  |  |  |
Share-Based Payment (Details) [Line Items] |  |  |  |  |  |  |  |
Compensation expense (in Dollars) |  |  |  |  | $ 31 |  |  |
Granted |  |  |  |  | 63,959 |  |  |
Series B2 Preferred [Member] |  |  |  |  |  |  |  |
Share-Based Payment (Details) [Line Items] |  |  |  |  |  |  |  |
Stock options value per share (in Dollars per share) |  |  | $ 2.28 |  |  |  |  |
Fair market value percent |  |  | 70.00% |  |  |  |  |
Share repurchased |  |  |  |  |  | 1,705,914 |  |
Deposit liability (in Dollars) |  |  |  |  |  | $ 21,792 | $ 21,792 | $ 21,792
Series B2 Preferred [Member] | Maximum [Member] |  |  |  |  |  |  |  |
Share-Based Payment (Details) [Line Items] |  |  |  |  |  |  |  |
Stock options value per share (in Dollars per share) |  |  |  |  |  | $ 2.28 |  |
Share Options [Member] |  |  |  |  |  |  |  |
Share-Based Payment (Details) [Line Items] |  |  |  |  |  |  |  |
Compensation expense (in Dollars) |  |  |  | $ 10,200 |  |  |  |
Series B2 Preferred [Member] |  |  |  |  |  |  |  |
Share-Based Payment (Details) [Line Items] |  |  |  |  |  |  |  |
Shares issued |  |  | 12,678,479 |  |  |  |  |
Stock options value per share (in Dollars per share) |  |  | $ 366 |  |  |  |  |
Deposit liability (in Dollars) |  |  |  |  |  | $ 21,792 |  |
Stock-based compensation expense (in Dollars) |  |  |  |  | $ 39,200 |  |  |
Legally shares issued and outstanding |  |  |  |  |  | 53,319 |  |
Series B2 Preferred [Member] | IPO [Member] |  |  |  |  |  |  |  |
Share-Based Payment (Details) [Line Items] |  |  |  |  |  |  |  |
Shares issued |  |  | 79,107 |  |  |  |  |

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