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Assets and Liabilities Carried at Fair Value Measured on Recurring Basis (Detail) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Other Current Assets    
Assets:    
Derivative financial instruments $ 417 $ 1,320
Other assets    
Assets:    
Equity securities 281 279
Accrued expenses and other current liabilities    
Liabilities:    
Derivative financial instruments 108 14
Fair Value Measurements, Level 1 | Other assets    
Assets:    
Equity securities 281 279
Fair Value Measurements, Level 2 | Other Current Assets    
Assets:    
Derivative financial instruments 417 1,320
Fair Value Measurements, Level 2 | Accrued expenses and other current liabilities    
Liabilities:    
Derivative financial instruments $ 108 $ 14