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Assets and Liabilities Carried at Fair Value Measured on Recurring Basis (Detail) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Other assets |  |
Assets: |  |
Available-for-sale securities | $ 254 | $ 266
Other Current Assets |  |
Assets: |  |
Derivative financial instruments | 1,249 | 644
Accrued expenses and other current liabilities |  |
Liabilities: |  |
Derivative financial instruments | 7 |
Fair Value Measurements, Level 1 | Other assets |  |
Assets: |  |
Available-for-sale securities | 254 | 266
Fair Value Measurements, Level 2 | Other Current Assets |  |
Assets: |  |
Derivative financial instruments | 1,249 | $ 644
Fair Value Measurements, Level 2 | Accrued expenses and other current liabilities |  |
Liabilities: |  |
Derivative financial instruments | $ 7 |

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