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v3.23.1

Related Party Transactions - Other Related Party Transactions and Cantor Rights to Purchase Cantor Units from Newmark Holdings (Details) |  |  |  |  |  | 1 Months Ended | 3 Months Ended |  |  |  |
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Apr. 16, 2023 USD ($) shares | Oct. 25, 2022 USD ($) shares | May 17, 2022 USD ($) shares | Jun. 28, 2021 USD ($) | Nov. 30, 2018 USD ($) | Jan. 31, 2022 USD ($) ft² | Mar. 31, 2023 USD ($) | Mar. 31, 2022 USD ($) | Dec. 31, 2022 USD ($) | Jul. 31, 2022 | Nov. 06, 2018 | Dec. 13, 2017
Related Party Transaction |  |  |  |  |  |  |  |  |  |  |  |
Payables to related parties |  |  |  |  |  |  | $ 1,299,000 |  | $ 9,745,000 |  |  |
Operating lease payments |  |  |  |  |  |  | $ 29,900,000 | $ 27,700,000 |  |  |  |
Limited partnership units exchange ratio |  |  |  |  |  |  | 0.4545 |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |  |  |  |
Remaining lease terms |  |  |  |  |  |  | 11 years |  |  |  |  |
Options to extend leases |  |  |  |  |  |  | 10 years |  |  |  |  |
Knotel, Inc. |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |  |  |  |
Due from related party, percentage from sale |  |  |  |  |  |  | 10.00% |  |  |  |  |
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 Group Inc Parent |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |  |  |  |
Limited partnership units exchange ratio |  |  |  |  |  |  | 0.9252 |  |  |  |  |
Cantor | Founding partner interest |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |  |  |  |
Stock issued (in shares) | shares |  | 104,701 | 184,714 |  |  |  |  |  |  |  |  |
Proceeds from sales of partnership interest |  | $ 446,647 | $ 763,064 |  |  |  |  |  |  |  |  |
Cantor | Founding partner interest | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |  |  |  |
Stock issued (in shares) | shares | 309,631 |  |  |  |  |  |  |  |  |  |  |
Proceeds from sales of partnership interest | $ 1,282,265 |  |  |  |  |  |  |  |  |  |  |
Cantor | Limited partner interest |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |  |  |  |
Stock issued (in shares) | shares |  | 102,454 | 23,562 |  |  |  |  |  |  |  |  |
Proceeds from sales of partnership interest |  | $ 272,100 | $ 100,079 |  |  |  |  |  |  |  |  |
Cantor | Limited partner interest | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |  |  |  |
Stock issued (in shares) | shares | 38,989 |  |  |  |  |  |  |  |  |  |  |
Proceeds from sales of partnership interest | $ 166,364 |  |  |  |  |  |  |  |  |  |  |
Affiliated Persons or Entities | RKF Retail Holdings LLC | Sublease Agreeement |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |  |  |  |
Remaining lease terms |  |  |  |  |  | 6 months |  |  |  |  |  |
Area of real estate property | ft² |  |  |  |  |  | 21,000 |  |  |  |  |  |
Options to extend leases |  |  |  |  |  |  |  |  |  | 1 year |  |
Affiliated Persons or Entities | Cantor |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |  |  |  |
Monthly payment on sublease |  |  |  |  |  | $ 81,600 |  |  |  |  |  |
Operating lease payments |  |  |  |  |  |  | $ 300,000 | $ 200,000 |  |  |  |
Employee of chairman |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |  |  |  |
Annual base salary |  |  |  | $ 125,000 |  |  |  |  |  |  |  |
Employee of chairman | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |  |  |  |
Annual discretionary bonus rate |  |  |  | 30.00% |  |  |  |  |  |  |  |
Employee |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |  |  |  |
Travel and housing reimbursement |  |  |  | $ 250,000 |  |  |  |  |  |  |  |
Cantor Credit Agreement | Cantor |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |  |  |  |
Maximum revolving credit |  |  |  |  | $ 250,000,000 |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  | 1.00% |  |  |  |  |  |  |

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