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

Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Detail)

Commitments and Contingencies - Additional Information (Detail) - USD ($)		1 Months Ended			3 Months Ended		9 Months Ended
	Jun. 30, 2015	Sep. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Commitments And Contingencies [Line Items]
Operating lease rent expense					$ 910,000	$ 949,000	$ 2,797,000	$ 2,817,000
Sub-lease income					64,000	96,000	225,000	284,000
Assets acquired under capital leases								32,000
Depreciation expense					184,000	270,000	553,000	544,000
Capital Lease Assets
Commitments And Contingencies [Line Items]
Depreciation expense					31,000	46,000	93,000	82,000
Additional Office Space
Commitments And Contingencies [Line Items]
Operating lease rent expense, net		$ 10,000					5,000
Refundable security deposit		$ 3,000			3,000		$ 3,000
Lease commencement date		Oct. 01, 2017					May 01, 2014
Lease expires		Nov. 30, 2024					Jul. 31, 2019
Number of rent free periods							3 months
Rent credit		$ 40,000,000			40,000,000		$ 40,000,000
Office Space \| Charlottesville, VA.
Commitments And Contingencies [Line Items]
Operating lease rent expense, net							2,000
Refundable security deposit		2,000			2,000		$ 2,000
Lease commencement date							Jun. 30, 2015
Lease expires							Jun. 30, 2018
Number of rent free periods							2 months
Office Space \| Bedminster, NJ.
Commitments And Contingencies [Line Items]
Operating lease rent expense, net							$ 11,000
Lease expires							Mar. 31, 2022
Number of rent free periods							4 months
Office Space \| Princeton, NJ.
Commitments And Contingencies [Line Items]
Operating lease rent expense, net			$ 6,000				$ 5,000
Lease expires			Aug. 31, 2022				Apr. 30, 2016
Number of rent free periods			5 months
Office Space \| New York City
Commitments And Contingencies [Line Items]
Operating lease rent expense, net							$ 446,000
Lease commencement date							Oct. 01, 2017
Lease expires							Sep. 30, 2028
Number of rent free periods							12 months
Payments for tenant improvements							$ 2,080,000
Office Space \| Livingston, NJ
Commitments And Contingencies [Line Items]
Operating lease rent expense, net			$ 2,000
Office Equipment
Commitments And Contingencies [Line Items]
Capital lease obligation		309,000			309,000		$ 309,000		$ 440,000
Office Equipment \| Telephone System
Commitments And Contingencies [Line Items]
Lease expires							Nov. 30, 2018
Assets acquired under capital leases							$ 321,000
Capital lease, period							5 years
Capital lease, minimum monthly payment							$ 5,000
Office Equipment \| Copier
Commitments And Contingencies [Line Items]
Lease expires				Oct. 31, 2018			Jun. 30, 2018
Assets acquired under capital leases				$ 18,000			$ 21,000
Capital lease, period				3 years			3 years
Capital lease, minimum monthly payment				$ 1,000			$ 1,000
Office Equipment \| Jamison
Commitments And Contingencies [Line Items]
Assets acquired under capital leases	$ 253,000
Letter of Credit
Commitments And Contingencies [Line Items]
Refundable security deposit		506,000			506,000		506,000		$ 506,000
Letter of Credit \| Boston landlord
Commitments And Contingencies [Line Items]
Refundable security deposit		$ 80,000			80,000		80,000
General and administrative
Commitments And Contingencies [Line Items]
Operating lease rent expense, net					$ 846,000	$ 853,000	$ 2,572,000	$ 2,533,000