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Compensation - Limited Partnership Units with a Post-Termination Payout (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022
BGC Holdings, L.P. |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Notional value | $ 151,951 | $ 144,045
Estimated fair value of the post-termination payout | $ 46,657 | $ 42,706
Outstanding limited partnership units (in shares) | 44,928 | 44,928
NEWMARK Group Inc Parent |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Outstanding limited partnership units (in shares) | 15,284,618 | 14,277,213
Outstanding limited partnership units - unvested (in dollars per share) | 1,477,145 | 2,155,668

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