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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Income Taxes [Line Items] |  |  |  |
Percentage of income attributable to wholly-owned operations and investments for which income tax expense and effective tax rate calculated | 100.00% |  |  |
Undistributed earnings of foreign subsidiaries | $ 113,000 |  |  |
Valuation allowance | 0 | $ 0 |  |
State and other net operating loss carry forwards | 6,771 |  |  |
Gross unrecognized tax benefits | 3,513 | 3,719 | $ 3,135 | $ 2,474
Unrecognized tax benefits that, if recognized, would affect the effective tax rate | 2,416 | 2,417 |  |
Estimated accrued interest and penalties resulting from unrecognized tax benefits | $ 384 | $ 729 |  |
Minimum |  |  |  |
Income Taxes [Line Items] |  |  |  |
State and other net operating loss carry forwards expiration date | 2016 |  |  |
Maximum |  |  |  |
Income Taxes [Line Items] |  |  |  |
State and other net operating loss carry forwards expiration date | 2035 |  |  |

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