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Employee Benefit Plans - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Defined Benefit Plan Disclosure [Line Items]      
Employee deferrals deemed vested percentage upon contribution     100.00%
Company's contributions to the plan $ 400 $ 300  
Company's expected contributions to the plan     $ 6
Maximum      
Defined Benefit Plan Disclosure [Line Items]      
Deferral percentage of base salary     80.00%
Deferral percentage of other compensation     100.00%