Defined Contribution and Deferred Compensation Plans - Additional Information (Detail) - USD ($) $ in Thousands  | 
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016  | 
Dec. 31, 2015  | 
Dec. 31, 2014  | 
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| Defined Contribution Plan Disclosure [Line Items] | |||
| Silvercrest matching contributions towards benefit of employees | $ 112 | $ 86 | $ 79 | 
| Maximum | |||
| Defined Contribution Plan Disclosure [Line Items] | |||
| Silvercrest matching contribution percentage | 4.00% | ||
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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| X | ||||||||||
- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. No definition available. 
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| X | ||||||||||
- Definition Percentage employer matches of the employee's percentage contribution matched. No definition available. 
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- Details 
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