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Description of Organization and Business Operations (Details) |  |  | 1 Months Ended | 4 Months Ended | 9 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 24, 2021 USD ($) $ / shares shares | Jan. 14, 2021 USD ($) $ / shares shares | Oct. 31, 2020 USD ($) | Dec. 31, 2020 USD ($) $ / shares shares | Sep. 30, 2021 USD ($) $ / shares shares | Dec. 31, 2020 USD ($) $ / shares shares | Aug. 06, 2021 USD ($) $ / shares | Aug. 03, 2021 USD ($) | May 27, 2021 USD ($) | Oct. 15, 2020 USD ($) | Dec. 31, 2019 USD ($)
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance initial public offering |  |  |  |  |  | $ 100,000,000 |  |  |  |  |
Cash |  |  |  | $ 90,626,000 | $ 145,597,000 | $ 90,626,000 |  |  |  |  | $ 58,524,000
Series F Preferred Stock |  |  |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Purchase price, per unit | $ / shares |  |  |  | $ 45.0400 | $ 45.0400 | $ 45.0400 |  |  |  |  |
890 5TH AVENUE PARTNERS, INC. |  |  |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Purchase price, per unit | $ / shares |  |  |  | $ 10.00 | $ 10.00 | $ 10.00 |  |  |  |  |
Proceeds from issuance initial public offering |  |  |  |  | $ 287,500,000 |  |  |  |  |  |
Cash |  |  |  | $ 201,781 | 59,820 | $ 201,781 |  |  |  |  |
Offering costs |  |  |  | $ 115,392 | $ 5,832,150 |  |  |  |  |  |
Price of warrant | $ / shares |  |  |  | $ 10.00 | $ 10.00 | $ 10.00 |  |  |  |  |
Proceeds received from private placement |  |  |  |  | $ 7,775,000 |  |  |  |  |  |
Threshold minimum aggregate fair market value as a percentage of the net assets held in the Trust Account |  |  |  | 80.00% | 80.00% |  |  |  |  |  |
Threshold percentage of outstanding voting securities of the target to be acquired by post-transaction company to complete business combination |  |  |  | 50.00% | 50.00% |  |  |  |  |  |
Minimum net tangible assets upon consummation of business combination |  |  |  | $ 5,000,001 | $ 5,000,001 | $ 5,000,001 |  |  |  |  |
Threshold percentage of public shares subject to redemption without companys prior written consent |  |  |  | 15.00% | 15.00% |  |  |  |  |  |
Obligation to redeem Public Shares if entity does not complete a Business Combination (as a percent) |  |  |  | 100.00% | 100.00% |  |  |  |  |  |
Maximum Allowed Dissolution Expenses |  |  |  | $ 100,000 | $ 100,000 |  |  |  |  |  |
Number of shares used in calculating the stock to be issued post merger | shares | 30,880,000 |  |  |  |  |  |  |  |  |  |
Cash |  |  |  | 202,000 |  | $ 202,000 |  |  |  |  |
Working capital |  |  |  | 325,000 | 1,100,000 |  |  |  |  |  |
Loan from the sponsor |  |  |  | $ 300,000 |  |  |  |  |  |  |
Repayment of promissory note - related party |  |  |  |  | $ 300,000 |  |  |  |  |  |
890 5TH AVENUE PARTNERS, INC. | 2026 Note |  |  |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount of unsecured convertible notes | $ 150,000,000.0 |  |  |  |  |  |  |  |  |  |
Debt instrument interest rate | 7.00% |  |  |  |  |  |  |  |  |  |
Minimum threshold hold amount to be maintained for the interest rate to be 7.00% | $ 144,000,000.0 |  |  |  |  |  |  |  |  |  |
Debt conversion converted shares | shares | 12,000,000 |  |  |  |  |  |  |  |  |  |
Conversion price | $ / shares | $ 12.50 |  |  |  |  |  |  |  |  |  |
Premium over the lowest per share price | 25 |  |  |  |  |  |  |  |  |  |
890 5TH AVENUE PARTNERS, INC. | Debt Instrument Financing |  |  |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument interest rate | 8.50% |  |  |  |  |  |  |  |  |  |
890 5TH AVENUE PARTNERS, INC. | Class A Common Stock |  |  |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Purchase price, per unit | $ / shares |  |  |  | $ 11.50 | $ 10.00 | $ 11.50 |  |  |  |  |
890 5TH AVENUE PARTNERS, INC. | Private Placement Warrants |  |  |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Offering costs |  |  |  |  | $ 12,000 |  |  |  |  |  |
Sale of Private Placement Warrants (in shares) | shares |  |  |  | 777,500 | 777,500 | 777,500 |  |  |  |  |
Price of warrant | $ / shares |  |  |  | $ 10.00 | $ 10.00 | $ 10.00 |  |  |  |  |
Proceeds received from private placement |  |  |  | $ 7,800,000 | $ 7,800,000 |  |  |  |  |  |
890 5TH AVENUE PARTNERS, INC. | Sponsor |  |  |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Additional loan amount |  |  |  |  |  |  | $ 800,000 |  |  |  |
Aggregate loan amount |  |  |  |  |  |  | 2,400,000 |  |  |  |
Commitment loan outstanding amount |  |  |  |  | 1,000,000.0 |  |  |  |  |  |
890 5TH AVENUE PARTNERS, INC. | Related Party Loans |  |  |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity of related party promissory note |  |  |  | 300,000 |  | $ 300,000 |  |  |  | $ 300,000 |
Maximum amount of loans converted into units of post business combination entity |  |  |  |  | $ 1,500,000 |  |  |  |  |  |
890 5TH AVENUE PARTNERS, INC. | Related Party Loans | Working capital loans warrant |  |  |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Purchase price, per unit | $ / shares |  |  |  |  | $ 10.00 |  |  |  |  |  |
890 5TH AVENUE PARTNERS, INC. | Sponsor |  |  |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Maximum Loans Convertible Amount |  |  |  |  |  |  |  |  | $ 1,600,000 |  |
Maximum amount of loans converted into units of post business combination entity |  |  |  |  |  |  | 1,500,000 |  |  |  |
Additional loan amount |  |  |  |  |  |  | 800,000 |  |  |  |
Aggregate loan amount |  |  |  |  |  |  | $ 2,400,000 |  |  |  |
Commitment loan outstanding amount |  |  |  |  |  |  |  | $ 1,000,000.0 |  |  |
890 5TH AVENUE PARTNERS, INC. | Sponsor | Working capital loans warrant |  |  |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Purchase price, per unit | $ / shares |  |  |  |  |  |  | $ 10.00 |  |  |  |
890 5TH AVENUE PARTNERS, INC. | IPO |  |  |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of units sold initial public offering (in shares) | shares |  | 28,750,000 |  |  |  |  |  |  |  |  |
Purchase price, per unit | $ / shares |  | $ 10.00 |  |  |  |  |  |  |  |  |
Proceeds from issuance initial public offering |  | $ 287,500,000 |  |  |  |  |  |  |  |  |
Offering costs |  | 6,200,000 |  |  |  |  |  |  |  |  |
Other offering costs |  | 6,200,000 |  |  |  |  |  |  |  |  |
890 5TH AVENUE PARTNERS, INC. | IPO | Warrant |  |  |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance initial public offering |  | $ 287,500,000 |  |  |  |  |  |  |  |  |
Price of warrant | $ / shares |  | $ 10.00 |  |  |  |  |  |  |  |  |
890 5TH AVENUE PARTNERS, INC. | IPO | Related Party Loans |  |  |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Consideration received |  |  | $ 25,000 | 25,000 |  |  |  |  |  |  |
Maximum borrowing capacity of related party promissory note |  | $ 300,000 |  | 300,000 |  | 300,000 |  |  |  |  |
Advance received from related party |  | 13,000 |  | $ 13,000 |  | $ 13,000 |  |  |  |  |
Repayment of promissory note - related party |  | $ 300,000 |  |  |  |  |  |  |  |  |
890 5TH AVENUE PARTNERS, INC. | Over-allotment option |  |  |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of units sold initial public offering (in shares) | shares |  | 3,750,000 |  |  |  |  |  |  |  |  |
Purchase price, per unit | $ / shares |  | $ 10.00 |  |  |  |  |  |  |  |  |

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