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Initial Public Offering (Details) - USD ($) |  | 4 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jan. 14, 2021 | Dec. 31, 2020 | Sep. 30, 2021 | Dec. 31, 2020
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Proceeds received from initial public offering, gross |  |  |  | $ 100,000,000
890 5TH AVENUE PARTNERS, INC. |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Purchase price, per unit |  | $ 10.00 | $ 10.00 | $ 10.00
Proceeds received from initial public offering, gross |  |  | $ 287,500,000 |
Offering costs |  | $ 115,392 | $ 5,832,150 |
Public Warrants | 890 5TH AVENUE PARTNERS, INC. |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Number of warrants in a unit | 0.33 |  |  |
Number of shares issuable per warrant | 1 |  |  |
Founder shares | Anchor Investors | 890 5TH AVENUE PARTNERS, INC. |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Number of warrants in a unit |  | 212,621 |  |
Class A Common Stock | 890 5TH AVENUE PARTNERS, INC. |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Purchase price, per unit |  | $ 11.50 | $ 10.00 | $ 11.50
Number of shares in a unit | 1 |  |  |
Number of warrants in a unit |  | 0.33 |  |
Number of shares issuable per warrant |  | 1 |  | 1
Class A Common Stock | Public Warrants | 890 5TH AVENUE PARTNERS, INC. |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Exercise price of warrants | $ 11.50 |  |  |
IPO | 890 5TH AVENUE PARTNERS, INC. |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Sale of units in private placement, less derivative liabilities for private placement warrants (in shares) | 28,750,000 |  |  |
Purchase price, per unit | $ 10.00 |  |  |
Proceeds received from initial public offering, gross | $ 287,500,000 |  |  |
Offering costs | $ 6,200,000 |  |  |
IPO | Anchor Investors | 890 5TH AVENUE PARTNERS, INC. |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Sale of units in private placement, less derivative liabilities for private placement warrants (in shares) | 1,000,000 |  |  |
Number of warrants in a unit |  | 1,000,000 |  |
IPO | Public Warrants | 890 5TH AVENUE PARTNERS, INC. |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Proceeds received from initial public offering, gross | $ 287,500,000 |  |  |
Offering costs | $ 6,200,000 |  |  |
Over-allotment option | 890 5TH AVENUE PARTNERS, INC. |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Sale of units in private placement, less derivative liabilities for private placement warrants (in shares) | 3,750,000 |  |  |
Purchase price, per unit | $ 10.00 |  |  |
Private Placement Warrant | 890 5TH AVENUE PARTNERS, INC. |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Exercise price of warrants |  | $ 11.50 | $ 11.50 | $ 11.50
Offering costs |  |  | $ 12,000 |
Private Placement Warrant | Anchor Investors | 890 5TH AVENUE PARTNERS, INC. |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Number of warrants in a unit |  | 28,750 |  |

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