Silvercrest Asset Management Group LLC Annual report pursuant to Section 13 and 15(d)

Equity - Class B Common Stock (Detail) - Class B Common Stock - shares	1 Months Ended										12 Months Ended
	Dec. 31, 2018	Nov. 30, 2018	Sep. 30, 2018	Aug. 31, 2018	Jun. 30, 2018	May 31, 2018	Apr. 30, 2018	Mar. 31, 2018	Jan. 31, 2018	Nov. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Class Of Stock [Line Items]
Common stock conversion date	2018-12	2018-11	2018-09	2018-08		2018-05	2018-04	2018-03	2018-01
Stock issued upon vesting of restricted stock units, Transaction date				2018-08		2018-05
Common stock issuance date					2018-06
Common stock, shares outstanding	4,934,103										4,934,103	5,059,319	4,866,000	4,695,000
Cancellation of Class B common stock upon conversion of Class B units to Class A common stock											374,000	63,000	84,000
Issuance of Class B common stock				241,627	6,289	948					6,000	13,000
Resale And Registration Rights Agreement
Class Of Stock [Line Items]
Cancellation of Class B common stock upon conversion of Class B units to Class A common stock	(108,319)	(64,142)	(17,666)	(22,285)		(24,732)	(20,000)	(85,286)	(31,650)	(85,286)