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Unaudited Pro Forma Information ( Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Sales	$ 1,597,920	$ 1,530,922
Operating income	98,019	52,213
Net income	$ 123,030	$ 17,428
Basic net income per share	$ 1.79	$ 0.25
Diluted net income per share	$ 1.78	$ 0.25

X

- Definition

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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+ References

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-Name Accounting Standards Codification

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