Stock Based Compensation - Additional Information (Detail) $ in Millions	12 Months Ended
Dec. 31, 2015 USD ($)
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Increase in share-based compensation expense	$ 2.0
2011 Long Term Incentive Plan
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Forfeitures benefits	$ 0.3

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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