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v3.21.1

Related Party Transactions - Other Related Party Transactions and Cantor Rights to Purchase Cantor Units from Newmark Holdings (Details) |  |  | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 31, 2021 USD ($) shares | Nov. 30, 2018 USD ($) | Mar. 31, 2021 USD ($) | Mar. 31, 2020 USD ($) | Dec. 31, 2020 USD ($) | May 15, 2020 USD ($) | Nov. 06, 2018
Related Party Transaction |  |  |  |  |  |  |
Accounts receivable, related parties | $ 0 |  | $ 0 |  | $ 0 |  |
Payables to related parties | $ 6,045,000 |  | 6,045,000 |  | $ 4,392,000 |  |
Operating lease payments |  |  | 11,800,000 | $ 11,700,000 |  |  |
Proceeds from sales of partnership interest |  |  | 4,025,000 | $ 0 |  |  |
Common Stock |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |
Limited partnership units exchange ratio (in percentage) |  |  |  |  |  |  | 1
Cantor | Founding partner interest |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |
Stock issued (in shares) | shares | 273,088 |  |  |  |  |  |
Proceeds from sales of partnership interest | $ 1,105,598 |  |  |  |  |  |
Cantor | Limited partner interest |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |
Stock issued (in shares) | shares | 735,625 |  |  |  |  |  |
Proceeds from sales of partnership interest | $ 2,918,919 |  |  |  |  |  |
Affiliated Persons or Entities | BGC Holdings, L.P. |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |
Accounts receivable, related parties |  |  |  |  |  | $ 1,100,000 |
Lease, term of contract (in years) |  |  |  |  |  | 1 year |
Affiliated Persons or Entities | BGC Holdings, L.P. |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |
Operating lease payments |  |  | $ 300,000 |  |  |  |
Cantor Credit Agreement | Cantor |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |
Maximum revolving credit |  | $ 250,000,000 |  |  |  |  |
Basis spread on variable rate (in percentage) |  | 1.00% |  |  |  |  |

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