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Acquisitions (Additional Information) (Detail)
0 Months Ended 6 Months Ended 0 Months Ended
Jun. 30, 2014
USD ($)
Dec. 31, 2013
USD ($)
Apr. 28, 2014
Aegis Flow Technologies [Member]
USD ($)
Jun. 30, 2014
Aegis Flow Technologies [Member]
USD ($)
Apr. 28, 2014
Aegis Flow Technologies [Member]
USD ($)
Mar. 18, 2013
FTL Seals Technology, Ltd
USD ($)
Mar. 18, 2013
FTL Seals Technology, Ltd
GBP (£)
Business Acquisition [Line Items]              
Annual revenue of entity acquired     $ 15,000,000        
Aggregate purchase price     26,000,000     34,500,000 23,100,000
Goodwill 1,363,753,000 1,349,456,000     8,805,000 18,000,000  
Intangible assets         8,800,000 13,000,000  
Goodwill expected tax deductible amount         8,800,000    
Acquisition-related transaction costs       900,000      
Fair value of inventory charges associated with acquisitions       500,000      
Goodwill not deductible for tax purposes           $ 18,000,000