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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015
Income Tax [Line Items] |  |
Undistributed non-U.S. subsidiary earnings | $ 81,700 |
Undistributed earnings subject to U.S. federal income tax | 28,600 |
Valuation allowance | 18,900 | $ 13,167
Deferred tax liability not recognized related to tax basis difference in investment in foreign subsidiaries | 15,400 |
Liability for uncertain tax positions | 2,700 | $ 8,100
Increase decrease in liability for uncertain tax positions | $ (5,400) |
Minimum |  |
Income Tax [Line Items] |  |
Operating loss carryforward period | 20 years |
Maximum |  |
Income Tax [Line Items] |  |
Operating loss carryforward period | indefinite |

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