v2.4.0.8
Deferred Compensation Plan - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Compensation Related Costs [Abstract]      
Percentage of deferred salary and commissions 25.00%    
Percentage of bonuses 100.00%    
Percentage of deferred matching contribution amount 25.00%    
Matching contribution on deferred amount $ 10    
Vesting schedule Five year    
Assets held in mutual funds 4,386 4,245  
Restricted investments 2,856 846  
Trading gains and offsetting compensation expense 364 329 19
Distributions from the deferred compensation plan aggregated $ 864 $ 357 $ 233