Silvercrest Asset Management Group LLC Quarterly report [Sections 13 or 15(d)]

Quarterly report [Sections 13 or 15(d)]

Commitments and Contingencies - Additional Information (Detail)

Commitments and Contingencies - Additional Information (Detail) € in Thousands, $ in Thousands, $ in Thousands	1 Months Ended							3 Months Ended		9 Months Ended
	Jul. 31, 2026 USD ($)	Apr. 30, 2026 USD ($)	Apr. 30, 2026 EUR (€)	Aug. 31, 2025 USD ($)	Feb. 28, 2025 USD ($)	Feb. 28, 2025 SGD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Apr. 30, 2026 EUR (€)	Dec. 31, 2025 USD ($)	Feb. 28, 2025 SGD ($)
Commitments And Contingencies [Line Items]
Operating lease rent expense								$ 1,884	$ 1,816	$ 5,546	$ 5,233
Sub-lease income										0	40
Operating lease liability								16,539		16,539			$ 19,625
Finance lease obligation								290		290			330
Depreciation expense								622	478	1,866	1,435
Office Equipment
Commitments And Contingencies [Line Items]
Finance lease obligation								290		290			330
Finance Lease Assets
Commitments And Contingencies [Line Items]
Depreciation expense								37	$ 32	108	$ 97
New York City \| Office Space
Commitments And Contingencies [Line Items]
Operating lease rent expense, net							$ 420
Lease commencement date							Oct. 01, 2017
Lease expiration date							Sep. 30, 2028
Number of rent free periods							12 months
Lease, initial term	180 months
Payments for tenant improvements	$ 6,726						$ 2,080
Minimum lease payments over initial lease term	$ 59,291
Singapore \| Office Space
Commitments And Contingencies [Line Items]
Operating lease rent expense, net					$ 26	$ 34
Refundable security deposit					$ 74									$ 94
Lease commencement date					May 16, 2025	May 16, 2025
Lease expiration date					May 15, 2031	May 15, 2031
Atlanta, GA \| Office Space
Commitments And Contingencies [Line Items]
Operating lease rent expense, net				$ 17
Lease commencement month and year				2026-01
Lease expiration date				May 31, 2033
Number of rent free periods				12 months
Dublin \| Office Space
Commitments And Contingencies [Line Items]
Operating lease rent expense, net		$ 13	€ 11
Operating lease liability		$ 1,070										€ 939
Lease commencement date		Apr. 27, 2026	Apr. 27, 2026
Lease expiration date		Apr. 26, 2036	Apr. 26, 2036
Number of rent free periods		3 months	3 months
Letter of Credit \| Boston landlord
Commitments And Contingencies [Line Items]
Refundable security deposit								80		80			80
Letter of Credit \| New York City Landlord
Commitments And Contingencies [Line Items]
Refundable security deposit								506		506			$ 506
Letter of Credit \| Future Space New York City
Commitments And Contingencies [Line Items]
Refundable security deposit								$ 1,732		$ 1,732