Silvercrest Asset Management Group LLC Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Equity - Additional Information (Detail)

Equity - Additional Information (Detail) - USD ($)	1 Months Ended						3 Months Ended			9 Months Ended		12 Months Ended
Equity - Additional Information (Detail) - USD ($)	Sep. 30, 2024	Aug. 31, 2024	Jun. 30, 2024	May 31, 2024	Apr. 30, 2024	Mar. 31, 2024	Sep. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023	Aug. 16, 2024	Jul. 29, 2021
Class Of Stock [Line Items]
Partnership distributions, amount							$ 1,479,000		$ 1,419,000	$ 6,395,000	$ 7,759,000
Distributions of partner incentive allocations of net income										30,008,000	$ 32,262,000
Treasury stock, aggregate price	$ 16,421,000						16,421,000			$ 16,421,000		$ 15,057,000
Non-Qualified Stock Options
Class Of Stock [Line Items]
Stock issued during period, shares, stock options exercised										456	22,070
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	21,405	15,459	28,737	25,002		3,025		3,025
Class A Common Stock
Class Of Stock [Line Items]
Treasury stock, purchased	60,600	22,077
Issuance of Class B common stock upon conversion of Class B units to Class A common stock	21,405	15,459	28,737	25,002		3,025		3,025
Class A Common Stock \| Restricted Stock
Class Of Stock [Line Items]
Issuance of common stock upon vesting of restricted stock units		1,827		11,635
Class A Common Stock \| 2021 Repurchase Program
Class Of Stock [Line Items]
Treasury stock, purchased												808,455
Treasury stock, aggregate price												$ 15,057,000
Class A Common Stock \| 2021 Repurchase Program \| Maximum
Class Of Stock [Line Items]
Stock repurchase program, authorized amount														$ 15,000,000
Class A Common Stock \| 2024 Repurchase Program
Class Of Stock [Line Items]
Treasury stock, purchased										82,677
Treasury stock, aggregate price	$ 1,364,000						1,364,000			$ 1,364,000
Class A Common Stock \| 2024 Repurchase Program \| Maximum
Class Of Stock [Line Items]
Stock repurchase program, authorized amount													$ 12,000,000
Silvercrest L.P
Class Of Stock [Line Items]
Accrued partner incentive allocations							$ 7,222,000		$ 6,983,000	$ 21,713,000	$ 20,476,000