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Information Related to Recurring Fair Value Measurement of Derivative Instruments in Our Consolidated Condensed Balance Sheet (Detail) - Fair Value, Inputs, Level 2 - Designated as Hedging Instrument - Current Assets
$ in Thousands
Jun. 30, 2017
USD ($)
Foreign Currency Derivatives  
Derivatives Fair Value [Line Items]  
Asset Derivatives, Fair Value $ 2,479
Net Asset 2,479
Commodity Derivatives  
Derivatives Fair Value [Line Items]  
Asset Derivatives, Fair Value 66
Net Asset $ 66