Certain Balance Sheet Accounts - Summary of Accrued Expenses and Other Current Liabilities (Detail) - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Payables And Accruals [Abstract] | ||
| Payroll and related benefits | $ 28,681 | $ 29,902 |
| Taxes | 4,704 | 2,564 |
| Other | 8,018 | 8,786 |
| Total | $ 41,403 | $ 41,252 |