v3.26.1
Compensation - Schedule of Grant of Conversion Rights to Newmark Employees (Details) - Limited Partnership Units - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Share-based Compensation Arrangement by Share-based Payment Award    
Notional Value $ 508 $ 512
Estimated fair value of limited partnership units $ 257 $ 261