Quarterly report pursuant to Section 13 or 15(d)

Equity - Additional Information (Detail)

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Equity - Additional Information (Detail) - USD ($)
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2024
May 31, 2024
Apr. 30, 2024
Mar. 31, 2024
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Jul. 29, 2021
Class Of Stock [Line Items]                      
Partnership distributions, amount         $ 1,612,000   $ 2,078,000 $ 4,916,000 $ 6,192,000    
Distributions of partner incentive allocations of net income               30,008,000 32,262,000    
Treasury stock, aggregate price $ 15,057,000       15,057,000     $ 15,057,000   $ 15,057,000  
Non-Qualified Stock Options                      
Class Of Stock [Line Items]                      
Stock issued during period, shares, stock options exercised               456      
Class B Common Stock                      
Class Of Stock [Line Items]                      
Stock issued during period, shares, acquisitions 1,580                    
Class B Common Stock | Restricted Stock                      
Class Of Stock [Line Items]                      
Issuance of common stock upon vesting of restricted stock units   41,484 25,298                
Class B Common Stock | Non-Qualified Stock Options                      
Class Of Stock [Line Items]                      
Stock issued during period, shares, stock options exercised     456                
Class B Common Stock | Neosho                      
Class Of Stock [Line Items]                      
Stock issued during period, shares, acquisitions 1,580                    
Class B Common Stock | Resale And Registration Rights Agreement                      
Class Of Stock [Line Items]                      
Share conversion, Shares 28,737 25,002   3,025   3,025          
Class A Common Stock                      
Class Of Stock [Line Items]                      
Treasury stock, purchased               808,455   808,455  
Issuance of Class B common stock upon conversion of Class B units to Class A common stock 28,737 25,002   3,025   3,025          
Class A Common Stock | Maximum                      
Class Of Stock [Line Items]                      
Stock repurchase program, authorized amount                     $ 15,000,000
Class A Common Stock | Restricted Stock                      
Class Of Stock [Line Items]                      
Issuance of common stock upon vesting of restricted stock units   11,635                  
Silvercrest L.P                      
Class Of Stock [Line Items]                      
Accrued partner incentive allocations         $ 7,514,000   $ 6,962,000 $ 14,491,000 $ 13,493,000