Quarterly report pursuant to Section 13 or 15(d)

Equity - Additional Information (Detail)

v3.22.2.2
Equity - Additional Information (Detail) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2022
Aug. 31, 2022
Jul. 31, 2022
Jun. 30, 2022
May 31, 2022
Apr. 30, 2022
Mar. 31, 2022
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Jul. 29, 2021
Class Of Stock [Line Items]                          
Partnership distributions, amount               $ 2,059,000 $ 1,471,000 $ 8,268,000 $ 6,821,000    
Distributions of partner incentive allocations of net income               34,429,000 27,819,000        
Treasury stock, aggregate price               5,240,000 418,000        
Class B Common Stock | Restricted Stock                          
Class Of Stock [Line Items]                          
Issuance of common stock         50,081                
Class B Common Stock | Neosho                          
Class Of Stock [Line Items]                          
Issuance of common stock in connection with acquisition           1,224              
Class B Common Stock | Cortina                          
Class Of Stock [Line Items]                          
Issuance of common stock in connection with acquisition     66,573                    
Class B Common Stock | Resale And Registration Rights Agreement                          
Class Of Stock [Line Items]                          
Share conversion, Shares 740 770   7,549 31,922   2,889            
Class A Common Stock                          
Class Of Stock [Line Items]                          
Treasury stock, purchased 136,930 148,579               318,592   33,083  
Treasury stock, aggregate price                   $ 5,752,000   $ 512,000  
Class A Common Stock | Maximum                          
Class Of Stock [Line Items]                          
Stock repurchase program, authorized amount                         $ 15,000,000
Silvercrest L.P                          
Class Of Stock [Line Items]                          
Accrued partner incentive allocations               $ 6,968,000 $ 9,196,000 $ 23,913,000 $ 26,210,000