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

Quarterly report pursuant to Section 13 or 15(d)

Debt - Additional Information (Detail)

Debt - Additional Information (Detail) (USD $)	3 Months Ended		0 Months Ended	12 Months Ended	0 Months Ended
Debt - Additional Information (Detail) (USD $)	Mar. 31, 2015	Mar. 31, 2014	Nov. 01, 2014	Dec. 31, 2014	Aug. 01, 2017	Aug. 01, 2016	Aug. 01, 2015	Jun. 24, 2013	Oct. 31, 2014	Jun. 03, 2013
Schedule Of Maturities Of Long Term Debt [Line Items]
Borrowings under revolving credit facility				$ 24,000us-gaap_LineOfCredit
Interest expense including amortization of deferred financing fees	58,000us-gaap_InterestExpense	127,000us-gaap_InterestExpense
Promissory Note
Schedule Of Maturities Of Long Term Debt [Line Items]
Variable rate notes issued for redemption of partners' interests, spread	1.00%
Debt instrument variable interest rate basis	The principal amount outstanding under these notes bear interest at the U.S. Prime Rate plus 1% in effect at the time payments are due.
Aggregate principal amount										5,300,000
Debt instrument reduction to principal amount									1,722,000
Principal amount of notes	3,578,000
Principal amount payment terms	As a result, the principal amounts of the notes of $3,578 became payable in four equal installments of approximately $900 on November 1, 2014, and on each of August 1, 2015, 2016 and 2017.
Number of installments	4
Installment amount payable			900,000
Principal amount of notes outstanding	2,683,000			2,683,000
Accrued, unpaid interest	47,000			19,000
Scenario Forecast \| Promissory Note
Schedule Of Maturities Of Long Term Debt [Line Items]
Installment amount payable					900,000	900,000	900,000
City National Bank
Schedule Of Maturities Of Long Term Debt [Line Items]
Credit facility, borrowing capacity								15,000,000
Credit facility, proceeds from borrowings								7,000,000
Borrowings under revolving credit facility	0			0
Interest expense including amortization of deferred financing fees	10,000	37,000
Delayed Draw Term Loan \| City National Bank
Schedule Of Maturities Of Long Term Debt [Line Items]
Credit facility, borrowing capacity								7,500,000
Credit facility maturity date								Jun. 24, 2020
Credit facility, interest rate description	The higher of the prime rate plus a margin of 0.05 percentage points and 2.5% or (b) the LIBOR rate plus 3 percentage points, at the borrowers’ option
Credit facility, number of installments								20
Credit facility, frequency of installments	Quarterly
Delayed Draw Term Loan \| City National Bank \| Option One \| Maximum
Schedule Of Maturities Of Long Term Debt [Line Items]
Variable rate notes issued for redemption of partners' interests, spread								0.05%
Debt instrument variable interest rate basis	Prime rate
Delayed Draw Term Loan \| City National Bank \| Option One \| Minimum
Schedule Of Maturities Of Long Term Debt [Line Items]
Credit facility, fixed interest rate								2.50%
Delayed Draw Term Loan \| City National Bank \| Option Two
Schedule Of Maturities Of Long Term Debt [Line Items]
Variable rate notes issued for redemption of partners' interests, spread								3.00%
Debt instrument variable interest rate basis	LIBOR
Borrowings Under Revolving Credit Agreement \| City National Bank
Schedule Of Maturities Of Long Term Debt [Line Items]
Credit facility, borrowing capacity								$ 7,500,000
Credit facility maturity date								Dec. 24, 2016
Debt covenant, restriction on change in control								30.00%