Quarterly report pursuant to sections 13 or 15(d)

Defined Contribution and Deferred Compensation Plans - Additional Information (Detail)

v2.4.0.8
Defined Contribution and Deferred Compensation Plans - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Defined Contribution Plan Disclosure [Line Items]        
Silvercrest matching contributions towards benefit of employees $ 11 $ 11 $ 44 $ 47
Maximum
       
Defined Contribution Plan Disclosure [Line Items]        
Silvercrest matching contribution percentage     4.00%