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
	Apr. 12, 2019	Dec. 13, 2018	Jan. 16, 2018	Aug. 31, 2019	Jul. 31, 2019	Mar. 31, 2019	Jan. 31, 2018	Jul. 31, 2017	Jan. 31, 2017	Sep. 30, 2016	Jan. 31, 2016	Dec. 31, 2015	Jun. 30, 2015	Mar. 31, 2014	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Commitments And Contingencies [Line Items]
Operating lease rent expense															$ 1,595,000	$ 1,529,000
Sub-lease income															38,000	32,000
Finance lease obligation															160,000		$ 196,000
Assets acquired under capital leases															162,000		198,000
Depreciation expense															273,000	163,000
Two Copiers \| Lease Agreement July 31, 2022
Commitments And Contingencies [Line Items]
Lease expired				Jul. 31, 2022
Assets acquired under capital leases				$ 51,000
Capital lease, period				3 years
Capital lease, minimum monthly payment				$ 1,000
Copier \| Through May Thirty First Two Thousand And Twenty Two
Commitments And Contingencies [Line Items]
Lease expired						May 31, 2022
Assets acquired under capital leases						$ 12,000										$ 12,000
Capital lease, period						39 months										39 months
Capital lease, minimum monthly payment						$ 400
Copier \| Through February 28,2022
Commitments And Contingencies [Line Items]
Lease expired						Feb. 28, 2021
Assets acquired under capital leases						$ 11,000										$ 11,000
Capital lease, period						3 years										3 years
Capital lease, minimum monthly payment						$ 300
Copier \| Through May 31, 2022
Commitments And Contingencies [Line Items]
Lease expired						Feb. 28, 2022
Assets acquired under capital leases						$ 13,000										$ 13,000
Capital lease, period						3 years										3 years
Capital lease, minimum monthly payment						$ 400
Cortina Asset Management, LLC \| Copier \| Lease Agreement November 2021
Commitments And Contingencies [Line Items]
Lease expired					Nov. 30, 2021
Capital lease, minimum monthly payment					$ 1,000
Finance Lease Assets
Commitments And Contingencies [Line Items]
Depreciation expense															31,000	$ 31,000
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 expired										Nov. 30, 2024				Jul. 31, 2019
Number of rent free periods														3 months
Rent credit										$ 40,000
Additional Office Space \| Amendment Number Two
Commitments And Contingencies [Line Items]
Lease commencement date			Jan. 16, 2018
Lease expired			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
Lease commencement date													Jun. 30, 2015
Lease expired													Jun. 30, 2018
Office Space \| Bedminster, NJ.
Commitments And Contingencies [Line Items]
Operating lease rent expense, net													$ 11,000
Lease expired													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 expired											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 expired												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
Lease expired											Jan. 31, 2019
Office Space \| Boston, MA
Commitments And Contingencies [Line Items]
Operating lease rent expense, net							$ 33,000
Lease commencement date							Jan. 01, 2018
Lease expired							Apr. 30, 2023
Number of rent free periods							1 month
Office Space \| La Jolla, CA
Commitments And Contingencies [Line Items]
Operating lease rent expense, net		$ 3,000
Lease expired		Jan. 31, 2020
Office Space \| San Diego, CA
Commitments And Contingencies [Line Items]
Operating lease rent expense, net		$ 12,000
Lease commencement date		Feb. 01, 2020
Lease expired		Jun. 30, 2025
Number of rent free periods		4 months
Payments for tenant improvements		$ 27,000
Office Space \| Milwaukee, WI
Commitments And Contingencies [Line Items]
Operating lease rent expense, net	$ 12,000
Lease expired	Dec. 31, 2020
Office Space \| Extended Lease Agreement \| Charlottesville, VA.
Commitments And Contingencies [Line Items]
Lease commencement date													Jul. 01, 2019
Lease expired													Jun. 30, 2022
Lease extended period													3 years
Office Equipment
Commitments And Contingencies [Line Items]
Finance lease obligation															160,000		196,000
Office Equipment \| Two Copiers
Commitments And Contingencies [Line Items]
Lease expired									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 expired								Jun. 30, 2020
Assets acquired under capital leases								$ 72,000
Capital lease, period								3 years
Capital lease, minimum monthly payment								$ 2,000
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															$ 1,557,000	$ 1,497,000