Annual report pursuant to Section 13 and 15(d)

Equity - Additional Information (Detail)

v3.7.0.1
Equity - Additional Information (Detail) - USD ($)
$ in Thousands
 1 Months Ended 12 Months Ended
Nov. 30, 2016
Aug. 31, 2016
May 31, 2016
Mar. 31, 2016
Feb. 29, 2016
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Class Of Stock [Line Items]                
Partnership distributions, amount           $ 5,761 $ 5,546 $ 5,242
Distributions of partner incentive allocations of net income           $ 18,827 $ 18,568 $ 14,266
Class B Common Stock                
Class Of Stock [Line Items]                
Common stock issued   241,628 9,198   4,911      
Exchange of Class B common stock for Class A common stock           (84,000) (211,000) (246,000)
Class B Common Stock | Resale And Registration Rights Agreement                
Class Of Stock [Line Items]                
Exchange of Class B common stock for Class A common stock 25,172 21,200   38,076        
Silvercrest L.P                
Class Of Stock [Line Items]                
Accrued partner incentive allocations           $ 20,238 $ 18,535 $ 18,653