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Employee Benefit Plan - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Defined Contribution Plan Employer Matching Contribution Vested Period 5 years  
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay 25.00%  
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount $ 1,500  
Defined Contribution Plan, Cost Recognized $ 2,239 $ 7,105