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Restructuring and Other Charges, Net - Changes in Employee-Related Restructuring Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Restructuring And Related Activities [Abstract]
Beginning Balance	$ 3,149
Additional charges, net		1,668
Payments and other costs	(1,777)
Ending Balance	$ 1,372

Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

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- Definition

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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