| 
           Defined Contribution and Deferred Compensation Plans - Additional Information (Detail) (USD $) 
        In Thousands, unless otherwise specified  | 
        3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
| 
           Jun. 30, 2014 
         | 
        
           Jun. 30, 2013 
         | 
        
           Jun. 30, 2014 
         | 
        
           Jun. 30, 2013 
         | 
      |
| Defined Contribution Plan Disclosure [Line Items] | ||||
| Silvercrest matching contributions towards benefit of employees | $ 17 | $ 17 | $ 33 | $ 33 | 
| 
           Maximum 
         | 
        ||||
| Defined Contribution Plan Disclosure [Line Items] | ||||
| Silvercrest matching contribution percentage | 4.00% | |||
| X | ||||||||||
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- Details 
          
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| X | ||||||||||
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- Definition 
          Amount of discretionary contributions made by an employer to a defined contribution plan. No definition available. 
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| X | ||||||||||
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- Definition 
          Percentage employer matches of the employee's percentage contribution matched. No definition available. 
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