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

Equity - Class A Common Stock (Detail) - Class A Common Stock - shares	1 Months Ended
	Dec. 31, 2019	Nov. 30, 2019	Aug. 31, 2019	Jun. 30, 2019	May 31, 2019	Mar. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Class Of Stock [Line Items]
Common stock, shares outstanding	9,329,879						8,518,096	8,142,000	8,074,000
Issuance of Class A common stock upon conversion of Class B units to Class A common stock	133,812	16,054	556,293	2,386	84,268	17,074
Issuance of Class A common stock upon vesting of restricted stock units					1,896
Common stock conversion date	Dec. 31, 2019	Nov. 30, 2019	Aug. 31, 2019	Jun. 30, 2019	May 31, 2019	Mar. 31, 2019
Stock issued upon vesting of restricted stock units, Transaction date					May 31, 2019