Schedule of Reclassification Adjustments and Other Activities Impacting Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		$ (37,608)	$ (49,500)	$ (69,091)	$ (51,670)
Other comprehensive income (loss) before reclassifications		13,510	1,404	45,353	2,843
Income tax effect of other comprehensive income (loss) before reclassifications		(134)	210	(1,067)	1,084
Amounts reclassified from accumulated other comprehensive (income) loss into net income		(1,357)	97	(577)	(57)
Income taxes reclassified into net income		366	(41)	159	(30)
Net current period other comprehensive income		12,385	1,670	43,868	3,840
Ending Balance		(25,223)	(47,830)	(25,223)	(47,830)
Defined Benefit Pension Plans
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		(2,550)	(2,060)	(2,550)	(2,060)
Ending Balance		(2,550)	(2,060)	(2,550)	(2,060)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		(37,071)	(47,645)	(65,762)	(49,381)
Other comprehensive income (loss) before reclassifications		13,251	2,230	42,051	2,866
Income tax effect of other comprehensive income (loss) before reclassifications		(49)	(13)	(158)	1,087
Net current period other comprehensive income		13,202	2,217	41,893	3,953
Ending Balance		(23,869)	(45,428)	(23,869)	(45,428)
Commodity Hedge Derivatives
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		272	26	241	(229)
Other comprehensive income (loss) before reclassifications		153	(8)	231	94
Income tax effect of other comprehensive income (loss) before reclassifications		(56)	3	(84)	(35)
Amounts reclassified from accumulated other comprehensive (income) loss into net income	[1]	(17)	147	(47)	450
Income taxes reclassified into net income		6	(54)	17	(166)
Net current period other comprehensive income		86	88	117	343
Ending Balance		358	114	358	114
Foreign Currency Hedge Derivatives
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		1,741	179	(1,020)
Other comprehensive income (loss) before reclassifications		106	(818)	3,071	(117)
Income tax effect of other comprehensive income (loss) before reclassifications		(29)	220	(825)	32
Amounts reclassified from accumulated other comprehensive (income) loss into net income	[1]	(1,340)	(50)	(530)	(507)
Income taxes reclassified into net income		360	13	142	136
Net current period other comprehensive income		(903)	(635)	1,858	(456)
Ending Balance		$ 838	$ (456)	$ 838	$ (456)

[1] The amounts reclassified from accumulated other comprehensive income (loss) are included in cost of sales.