Information Related to Effect of Derivative Instrument's on Our Consolidated Statements of Income (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives		$ (3,000,000)	$ (1,071,000)
Currency Related Swap
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives	$ 9,949,000	9,949,000	(1,157,000)
Interest Rate Swap
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives			80,000
Commodity Derivatives
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives		(848,000)
Other Comprehensive Income (Loss) | Foreign Currency Derivatives
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives		10,000	(10,000)
Other Comprehensive Income (Loss) | Interest Rate Swap
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives			81,000
Other Comprehensive Income (Loss) | Commodity Derivatives
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives		(725,000)
Revaluation of Derivatives | Foreign Currency Derivatives
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives		(1,102,000)	640,000
Revaluation of Derivatives | Currency Related Swap
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives			(1,157,000)
Revaluation of Derivatives | Interest Rate Swap
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives			(1,000)
Product Revenues | Foreign Currency Derivatives
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives			(390,000)
Cost of Sales | Foreign Currency Derivatives
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives		(1,782,000)	(174,000)
Cost of Sales | Commodity Derivatives
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives		(123,000)
Selling, General and Administrative Expense | Foreign Currency Derivatives
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives		(477,000)	(161,000)
Foreign Currency (Loss) Gain | Foreign Currency Derivatives
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives		351,000	$ (976,000)
Gain on Settlement of Derivatives | Currency Related Swap
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives		$ 9,949,000