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Assets and Liabilities Carried at Fair Value Measured on Recurring Basis (Detail) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Other assets    
Assets:    
Available-for-sale securities $ 294 $ 281
Other Current Assets    
Assets:    
Derivative financial instruments 184 241
Accrued expenses and other current liabilities    
Liabilities:    
Derivative financial instruments 856 39
Fair Value Measurements, Level 1 | Other assets    
Assets:    
Available-for-sale securities 294 281
Fair Value Measurements, Level 2 | Other Current Assets    
Assets:    
Derivative financial instruments 184 241
Fair Value Measurements, Level 2 | Accrued expenses and other current liabilities    
Liabilities:    
Derivative financial instruments $ 856 $ 39