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Purchase Price Allocation (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
May 08, 2012
Business Combination Allocation Of Purchase Price [Line Items]    
Cash   $ 10,982
Current assets   93,409
Property, plant and equipment   32,541
Intangibles   162,800
Deferred income taxes   4,640
Goodwill 146,400 146,444
Total assets   450,816
Current liabilities   (74,722)
Deferred income taxes   (1,100)
Total liabilities   (75,822)
Business Acquisition, Purchase Price Allocation, Assets Acquired (Liabilities Assumed), Net   374,994
Acquisition, net of cash acquired   $ 364,012