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Assets and Liabilities Carried at Fair Value Measured on Recurring Basis (Detail) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Other assets |  |
Assets: |  |
Available-for-sale securities | $ 281 | $ 254
Other Current Assets |  |
Assets: |  |
Derivative financial instruments | 241 | 1,249
Accrued expenses and other current liabilities |  |
Liabilities: |  |
Derivative financial instruments | 39 | 7
Fair Value Measurements, Level 1 | Other assets |  |
Assets: |  |
Available-for-sale securities | 281 | 254
Fair Value Measurements, Level 2 | Other Current Assets |  |
Assets: |  |
Derivative financial instruments | 241 | 1,249
Fair Value Measurements, Level 2 | Accrued expenses and other current liabilities |  |
Liabilities: |  |
Derivative financial instruments | $ 39 | $ 7

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