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Organization and Business - Additional Information (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified |
3 Months Ended | 6 Months Ended | 9 Months Ended | 0 Months Ended | 1 Months Ended | 9 Months Ended | 0 Months Ended | 1 Months Ended | 9 Months Ended | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Sep. 30, 2012
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Jun. 30, 2013
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Sep. 30, 2013
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Sep. 30, 2012
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Jul. 12, 2013
Class A Common Stock
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Jul. 02, 2013
Class A Common Stock
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Jun. 26, 2013
Class A Common Stock
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Sep. 30, 2013
Class A Common Stock
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Dec. 31, 2012
Class A Common Stock
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Sep. 30, 2012
Class A Common Stock
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Dec. 31, 2011
Class A Common Stock
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Jul. 12, 2013
Class A Common Stock
Underwriting Discounts and Commissions
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Jul. 02, 2013
Class A Common Stock
Underwriting Discounts and Commissions
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Jul. 12, 2013
Class A Common Stock
Offering Expenses
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Jul. 02, 2013
Class A Common Stock
Offering Expenses
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Mar. 11, 2004
Silvercrest Financial Services, Inc. ("SFS")
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Dec. 31, 2004
SAM Alternative Solutions, Inc.) (LGI)
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Oct. 03, 2008
Marathon Capital Group, LLC (MCG)
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Jul. 31, 2013
Slp
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Sep. 30, 2013
Slp
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Sep. 30, 2013
Slp
Capital Unit, Class B
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| Business And Organization [Line Items] | |||||||||||||||||||||
| Percentage of outstanding shares acquired | 100.00% | 100.00% | 100.00% | ||||||||||||||||||
| Number of shares held by parent | 4,790,694 | ||||||||||||||||||||
| Percentage ownership in a consolidated subsidiary | 43.00% | 46.00% | |||||||||||||||||||
| Issuance of Class A shares in IPO, Shares | 718,603 | 4,790,684 | 5,509,000 | ||||||||||||||||||
| Initial public offering shares price | $ 11.00 | $ 11.00 | |||||||||||||||||||
| Net proceeds from IPO | $ 7,391 | $ 47,878 | |||||||||||||||||||
| Stock issuance costs | 1,420 | 498 | 3,324 | 16 | 1,496 | ||||||||||||||||
| Gross proceeds from IPO | 7,905 | ||||||||||||||||||||
| Common Stock, shares outstanding | 5,509,297 | 0 | 0 | 0 | |||||||||||||||||
| Distribution of partnership units for each limited partnership unit prior to the consummation of the IPO | 19.64 | 19.64 | |||||||||||||||||||
| Class B partnership units issued | 10,000,000 | ||||||||||||||||||||
| Tax receivable agreement with limited partner, percentage of cash savings to be paid | 85.00% | ||||||||||||||||||||
| Recognition of tax receivable agreement liability | 3,734 | ||||||||||||||||||||
| Special distribution paid by parent | 10,000 | ||||||||||||||||||||
| Borrowings under revolving credit facility | 7,000 | 7,000 | |||||||||||||||||||
| Special bonus payment | 754 | ||||||||||||||||||||
| Number of partnership units purchased from partners | 3,540,684 | ||||||||||||||||||||
| Initial public offering shares price | $ 11.00 | ||||||||||||||||||||
| Purchase of Class B units from partners of Silvercrest L.P. | (35,365) | 35,365 | |||||||||||||||||||
| Underwriting discounts and commissions | 2,457 | ||||||||||||||||||||
| Estimated offering expenses | $ 1,126 | ||||||||||||||||||||
| Percentage of cash savings expected to be realized | 15.00% | ||||||||||||||||||||
| Number of performance units conditionally issuable | 146,452 | 237,089 | 146,452 | ||||||||||||||||||