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v3.25.3

Related Party Transactions - Cantor Rights to Purchase Cantor Units from Newmark Holdings (Details) | Feb. 18, 2025 shares | Oct. 23, 2024 USD ($) shares | Sep. 30, 2025 USD ($) shares | Dec. 31, 2024 USD ($) | Sep. 23, 2024 | Nov. 06, 2018 | Dec. 13, 2017
--- | --- | --- | --- | --- | --- | --- | ---
Related Party Transaction |  |  |  |  |  |  |
Limited partnership units exchange ratio | 0.9279 | 0.9257 | 0.4545 |  | 0.9248 |  |
Receivable related to tax receivable agreement | $ |  |  | $ 20,600,000 |  |  |  |
Payable related to tax receivable agreement | $ |  |  | $ 17,511,000 | $ 0 |  |  |
Related Party |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |
Tax receivable agreement, cash savings, percentage |  |  | 85.00% |  |  |  |
General partners' capital account, units outstanding (in shares) |  |  | 595,632 |  |  |  |
Founding partner interest | Related Party |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |
Issuance of Class A common stock for Newmark RSUs (in shares) |  | 500,617 |  |  |  |  |
Proceeds from the sale of limited partnership interests | $ |  | $ 1,824,045 |  |  |  |  |
Founding partner interest | Related Party | Exchangeable Limited Partnership Interests |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |
Unit exercised during period (in shares) | 7,782,387 | 13,861 |  |  |  |  |
Unit granted during period (in shares) | 7,221,277 | 12,831 |  |  |  |  |
Limited partner interest | Related Party |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |
Issuance of Class A common stock for Newmark RSUs (in shares) |  | 162,086 |  |  |  |  |
Proceeds from the sale of limited partnership interests | $ |  | $ 506,022 |  |  |  |  |
Common Stock |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |
Limited partnership units exchange ratio |  |  |  |  |  | 1 |
Class A Common Stock |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |
Limited partnership units exchange ratio |  |  |  |  |  |  | 1
Class A Common Stock | Newmark Holdings Units |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |
Limited partnership units exchange ratio |  |  | 0.9258 |  |  |  |

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