- Fair Value Measurements (Detail) - Fair value, measurements, recurring - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-qualified deferred compensation assets	$ 49,330	$ 48,238
Foreign exchange contracts, net	298	2,767
Interest rate swap contracts		186
Total assets at fair value	49,628	51,191
Commodity contracts, net		(354)
Non-qualified deferred compensation liabilities	(49,330)	(48,238)
Total liabilities at fair value	(49,330)	(48,592)
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-qualified deferred compensation assets	49,330	48,238
Foreign exchange contracts, net	0	0
Interest rate swap contracts		0
Total assets at fair value	49,330	48,238
Commodity contracts, net		0
Non-qualified deferred compensation liabilities	(49,330)	(48,238)
Total liabilities at fair value	(49,330)	(48,238)
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-qualified deferred compensation assets	0	0
Foreign exchange contracts, net	298	2,767
Interest rate swap contracts		186
Total assets at fair value	298	2,953
Commodity contracts, net		(354)
Non-qualified deferred compensation liabilities	0	0
Total liabilities at fair value	0	(354)
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-qualified deferred compensation assets	0	0
Foreign exchange contracts, net	0	0
Interest rate swap contracts		0
Total assets at fair value	0	0
Commodity contracts, net		0
Non-qualified deferred compensation liabilities	0	0
Total liabilities at fair value	$ 0	$ 0