v3.26.1
Employee Compensation and Benefits - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2022
Compensation Items [Line Items]          
Partnership interest-based compensation $ 7,626 $ 16,323 $ 13,004 $ 28,548  
Interest-based compensation, award modifications 2,500 7,300 5,000 12,700  
Unvested stated target payments 20,700 13,300 20,700 13,300  
Interest-based compensation expense, profit interest 5,100 7,300 8,000 10,200  
Holdings, Holdings II and Management LLC          
Compensation Items [Line Items]          
Partnership interest-based compensation 7,600 16,300 13,000 28,500  
GCMH Equityholders Awards          
Compensation Items [Line Items]          
Partnership interest-based compensation $ 0 $ 1,700 $ 0 $ 5,600  
Equityholders awards, aggregate grant fair value (in shares)         7,169,415
Aggregate grant date fair value         $ 53,400
Equityholders awards, grant fair value (in usd per share)         $ 7.45
Partnership interest, equityholders awards, settlement shares (in shares)       200,000