Annual report pursuant to Section 13 and 15(d)

Equity - Additional Information (Detail)

v3.22.0.1
Equity - Additional Information (Detail) - USD ($)
 1 Months Ended 12 Months Ended
Dec. 31, 2021
Nov. 30, 2021
Sep. 30, 2021
Aug. 31, 2021
Jul. 31, 2021
Jun. 30, 2021
May 31, 2021
Mar. 31, 2021
Jan. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Jul. 29, 2021
Class Of Stock [Line Items]                          
Partnership distributions, amount                   $ 6,680,000 $ 6,297,000 $ 7,698,000  
Distributions of partner incentive allocations of net income                   27,819,000 27,328,000 27,199,000  
Treasury stock, aggregate price                   $ 512,000      
Cortina                          
Class Of Stock [Line Items]                          
Issuance of common stock in connection with acquisition         44,267                
Class B Common Stock                          
Class Of Stock [Line Items]                          
Issuance of common stock                 34,196        
Class B Common Stock | Neosho                          
Class Of Stock [Line Items]                          
Issuance of common stock in connection with acquisition           1,740              
Class B Common Stock | Cortina                          
Class Of Stock [Line Items]                          
Issuance of common stock in connection with acquisition         44,267                
Class B Common Stock | Restricted Stock                          
Class Of Stock [Line Items]                          
Issuance of common stock             20,876   21,598        
Class B Common Stock | Resale And Registration Rights Agreement                          
Class Of Stock [Line Items]                          
Share conversion, Shares 170,658 51,115   10,651   5,864 4,743 7,605          
Class A Common Stock                          
Class Of Stock [Line Items]                          
Issuance of common stock             856            
Treasury stock, purchased 4,694 1,192 27,197             33,083      
Treasury stock, aggregate price                   $ 512,000      
Class A Common Stock | Maximum                          
Class Of Stock [Line Items]                          
Stock repurchase program, authorized amount $ 15,000,000                 15,000,000     $ 15,000,000
Class A Common Stock | Restricted Stock                          
Class Of Stock [Line Items]                          
Issuance of common stock             856            
Silvercrest L.P                          
Class Of Stock [Line Items]                          
Accrued partner incentive allocations                   $ 34,781,000 $ 27,467,000 $ 27,229,000  
Silvercrest L.P | Class B Common Stock                          
Class Of Stock [Line Items]                          
Issuance of common stock                 34,196