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Employee Benefit and Bonus Plans - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2016 USD ($) Employees | Dec. 31, 2015 USD ($)
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract] |  |
Contributions to the plan | $ 0 | $ 0
Executive Performance |  |
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract] |  |
Number of employees who are covering executive performance of bonus plan | Employees | 43 |
Accrued expenses | $ 490,000 | $ 460,000

X
- Definition Amount of expense recognized from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments), awarded to key employees or individuals. Excludes amount related to plans that cover generally all employees (for example, but not limited to, qualified pension plans). + References No definition available. + Details
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X
- References No definition available. + Details
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X
- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
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X
- Definition Number of employees eligible to participate in the defined contribution plan or plans described. + References No definition available. + Details
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- Details
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