Annual report [Section 13 and 15(d), not S-K Item 405]

Equity - Additional Information (Detail)

v3.25.0.1
Equity - Additional Information (Detail) - USD ($)
 1 Months Ended 12 Months Ended
Dec. 31, 2024
Nov. 30, 2024
Oct. 31, 2024
Sep. 30, 2024
Aug. 31, 2024
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Aug. 16, 2024
Jul. 29, 2021
Class Of Stock [Line Items]                    
Partnership distributions, amount           $ 6,720,000 $ 7,818,000 $ 7,912,000    
Distributions of partner incentive allocations of net income           30,008,000 32,262,000 34,429,000    
Treasury stock, aggregate price $ 19,728,000         $ 19,728,000 $ 15,057,000      
Class A Common Stock                    
Class Of Stock [Line Items]                    
Treasury stock, purchased 71,683 61,064 50,400 60,600 22,077          
Class A Common Stock | 2021 Repurchase Program                    
Class Of Stock [Line Items]                    
Treasury stock, purchased           265,824 808,455      
Treasury stock, aggregate price $ 4,625,000         $ 4,625,000 $ 15,057,000      
Class A Common Stock | Maximum | 2021 Repurchase Program                    
Class Of Stock [Line Items]                    
Stock repurchase program, authorized amount                   $ 15,000,000
Class A Common Stock | Maximum | 2024 Repurchase Program                    
Class Of Stock [Line Items]                    
Stock repurchase program, authorized amount                 $ 12,000,000  
Silvercrest L.P                    
Class Of Stock [Line Items]                    
Accrued partner incentive allocations           $ 31,140,000 $ 31,289,000 $ 32,262,000