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Class A Common Stock Subject to Possible Redemption (Details) | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2021 USD ($) | Jun. 30, 2021 USD ($) | Sep. 30, 2021 USD ($) Vote $ / shares shares | Dec. 31, 2020 USD ($) $ / shares shares | Jan. 11, 2021 $ / shares shares | Sep. 09, 2020 shares | Dec. 31, 2019 $ / shares shares
Temporary Equity [Line Items] |  |  |  |  |  |  |
Gross proceeds received from Initial Public Offering | $ |  |  |  | $ 100,000,000 |  |  |
Class A Common Stock |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Common Stock, Shares Authorized |  |  | 500,000,000 | 500,000,000 |  |  | 500,000,000
Common Stock, Par or Stated Value Per Share | $ / shares |  |  | $ 0.0001 | $ 0.0001 |  |  | $ 0.0001
Common Stock, Shares, Outstanding |  |  | 5,081,771 | 5,034,459 |  |  | 5,014,300
890 5TH AVENUE PARTNERS, INC. |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Gross proceeds received from Initial Public Offering | $ |  |  | $ 287,500,000 |  |  |  |
Fair value of Public Warrants at issuance | $ |  |  | (11,116,667) |  |  |  |
Offering costs allocated to Class A common stock | $ |  |  | (5,989,181) |  |  |  |
Accretion of Class A common stock subject to redemption amount | $ | $ 17,105,848 | $ 17,105,848 | 17,105,848 |  |  |  |
Class A common stock subject to possible redemption | $ |  |  | $ 287,500,000 |  |  |  |
890 5TH AVENUE PARTNERS, INC. | Class A Common Stock |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Common Stock, Shares Authorized |  |  | 500,000,000 | 500,000,000 | 500,000,000 | 0 |
Common Stock, Par or Stated Value Per Share | $ / shares |  |  | $ 0.0001 | $ 0.0001 | $ 0.0001 |  |
Number of votes per common stock | Vote |  |  | 1 |  |  |  |
Common Stock, Shares, Outstanding |  |  | 777,500 | 0 |  |  |
Temporary equity, shares outstanding |  |  | 28,750,000 |  |  |  |
Common stock shares outstanding including shares subject to possible redemption |  |  | 29,527,500 |  |  |  |
890 5TH AVENUE PARTNERS, INC. | Class A Common Stock Subject to Redemption |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Common Stock, Par or Stated Value Per Share | $ / shares |  |  | $ 0.0001 | $ 0.0001 |  |  |
Temporary equity, shares outstanding |  |  | 28,750,000 | 0 |  |  |

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