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Restructuring and Other Impairment Charges (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Restructuring Cost and Reserve [Line Items]      
Aggregate impairment charges - investments and certain fixed assets   $ 2,497  
Restructuring and other impairment charges 3,037 6,005 2,875
LMA Restructuring Program
     
Restructuring Cost and Reserve [Line Items]      
Restructuring charges 2,515    
2012 Restructuring Program
     
Restructuring Cost and Reserve [Line Items]      
Restructuring charges 2,459    
2011 Restructuring Program
     
Restructuring Cost and Reserve [Line Items]      
Restructuring charges   3,047  
2007 Arrow Integration Program
     
Restructuring Cost and Reserve [Line Items]      
Restructuring charges $ (1,937) $ 461 $ 2,875