Components of Calculation of Earnings Per Share (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share [Abstract]
Net income	$ 23,636	[1]	$ 83,276	[1]	$ 44,003	[1]	$ 31,476	[1]	$ 23,276	[2]	$ 77,175	[2]	$ 59,529	[2]	$ 25,433	[2]	$ 182,391	$ 185,413	$ 151,346
Weighted average number of shares used in:
Basic earnings per share																	63,426	64,254	69,571
Dilutive common stock equivalents:
Stock options and restricted stock units																	319	404	318
Diluted earnings per share																	63,745	64,658	69,889

[1] The first, second, third and fourth quarters of 2014 include rationalization charges of $1.6 million, $0.9 million, $2.5 million and $9.5 million, respectively, and (loss) income from operations in Venezuela of $(0.5) million, $(2.9) million, $0.8 million and $(0.5) million, respectively. The first quarter of 2014 includes a loss on early extinguishment of debt of $1.5 million. The first and third quarters of 2014 include costs attributable to announced acquisitions of $0.2 million and $0.3 million, respectively.

[2] The first, second, third and fourth quarters of 2013 include rationalization charges of $1.4 million, $0.9 million, $1.3 million and $8.4 million, respectively, and (loss) income from operations in Venezuela of $(4.2) million, $(1.1) million, $0.1 million and $2.3 million, respectively. The loss from operations in Venezuela for the first quarter of 2013 includes a charge of $3.0 million for the remeasurement of net assets due to a currency devaluation. The first, third and fourth quarters of 2013 include costs attributable to announced acquisitions of $0.2 million, $1.0 million and $0.3 million, respectively. The first quarter of 2013 includes new plant start-up costs of $0.8 million.