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

Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Additional Information (Detail)

Commitments and Contingencies - Additional Information (Detail) - USD ($)		1 Months Ended										12 Months Ended
	Jun. 30, 2015	Jan. 31, 2018	Jul. 31, 2017	Jan. 31, 2017	Sep. 30, 2016	Jan. 31, 2016	Dec. 31, 2015	Oct. 31, 2015	Jul. 31, 2015	Jun. 30, 2015	Mar. 31, 2014	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Commitments And Contingencies [Line Items]
Operating lease rent expense												$ 4,369,000	$ 3,760,000	$ 3,766,000
Sub-lease income												278,000	289,000	433,000
Assets acquired under capital leases												301,000		50,000
Depreciation expense												975,000	737,000	719,000
Capital Lease Assets
Commitments And Contingencies [Line Items]
Depreciation expense												142,000	124,000	123,000
Additional Office Space
Commitments And Contingencies [Line Items]
Operating lease rent expense, net					$ 10,000						$ 5,000
Refundable security deposit											$ 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
Additional Office Space \| Amendment Number Two
Commitments And Contingencies [Line Items]
Lease commencement date					Jan. 16, 2018
Lease expires					Nov. 30, 2028
Lease expansion date					Jan. 12, 2018
Office Space \| Charlottesville, VA.
Commitments And Contingencies [Line Items]
Operating lease rent expense, net										$ 2,000
Refundable security deposit	$ 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 commencement date						Apr. 23, 2016
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 Space \| Boston, MA \| Subsequent Event
Commitments And Contingencies [Line Items]
Operating lease rent expense, net		$ 33,000
Lease commencement date		Jan. 01, 2018
Lease expires		Apr. 30, 2023
Number of rent free periods		1 month
Office Equipment
Commitments And Contingencies [Line Items]
Capital lease obligation												$ 299,000	267,000
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				Dec. 31, 2018				Oct. 31, 2018	Jun. 30, 2018
Assets acquired under capital leases				$ 11,000				$ 18,000	$ 21,000
Capital lease, period				2 years				3 years	3 years
Capital lease, minimum monthly payment				$ 1,000				$ 1,000	$ 1,000
Office Equipment \| Two Copiers
Commitments And Contingencies [Line Items]
Lease expires				Jan. 31, 2022
Assets acquired under capital leases				$ 152,000
Capital lease, period				5 years
Capital lease, minimum monthly payment				$ 3,000
Office Equipment \| Four Copiers
Commitments And Contingencies [Line Items]
Lease expires			Jun. 30, 2020
Assets acquired under capital leases			$ 72,000
Capital lease, period			3 years
Capital lease, minimum monthly payment			$ 2,000
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
Letter of Credit \| Boston landlord
Commitments And Contingencies [Line Items]
Refundable security deposit												80,000
General and administrative
Commitments And Contingencies [Line Items]
Operating lease rent expense, net												$ 4,091,000	$ 3,471,000	$ 3,333,000