v3.26.3
Stockholders' Equity and Redeemable Non-Controlling Interests (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended 56 Months Ended
Sep. 30, 2026
Jun. 30, 2026
Mar. 31, 2026
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2024
Dec. 31, 2021
Sep. 30, 2026
Feb. 08, 2023
Class of Stock [Line Items]                        
Treasury stock purchases             $ 2,002 $ 33,655        
Distribution rate 0.001           0.001       0.001  
Payment for the exchange of partnership units, cash             $ 0 $ 28,258        
Professional Partners and ILPs                        
Class of Stock [Line Items]                        
Noncontrolling interest, units owned (in shares) 18,021,285           18,021,285       18,021,285  
Noncontrolling interest, ownership percentage by noncontrolling owners 18.50%           18.50%       18.50%  
Founder Share Purchase Option                        
Class of Stock [Line Items]                        
Treasury stock purchase (in shares)                 1,000,000 1,000,000    
Share price (in dollars per share)                 $ 15.00 $ 12.00    
Treasury stock purchases                 $ 15,000 $ 12,000    
Common Class A                        
Class of Stock [Line Items]                        
Stock repurchase program, authorized amount                       $ 200,000
Treasury stock purchase (in shares)                     14,877,364  
Share price (in dollars per share)                     $ 9.53  
Treasury stock purchases                     $ 141,800  
Conversion ratio 1           1       1  
Common Class A | Common Stock                        
Class of Stock [Line Items]                        
Exchange of PWP OpCo Units and corresponding Class B common stock for Class A common stock (in shares) 1,999,015 1,908,084 215,215 1,500,380 1,234,357   4,122,314 2,734,737        
Class B Common Stock | Common Stock                        
Class of Stock [Line Items]                        
Exchange of PWP OpCo Units and corresponding Class B common stock for Class A common stock (in shares) 1,997,030 1,906,191 215,000 1,498,883 1,233,125 1,270,086            
Conversion of stock, shares converted, cash settled (in shares)               1,270,086        
Payment for the exchange of partnership units, price (in dollars per share)       $ 22.65       $ 22.65        
Payment for the exchange of partnership units, cash               $ 28,300