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Estimated Amortization Expense for Future Fiscal Years Based on Capitalized Software and Other Intangible Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]    
Net Balance $ 193,814 $ 127,900
Software
   
Finite-Lived Intangible Assets [Line Items]    
Remainder of 2013 15,938  
2014 30,073  
2015 25,515  
2016 21,202  
2017 17,929  
2018 17,216  
Thereafter 49,963  
Net Balance 177,836  
Other Intangible Assets
   
Finite-Lived Intangible Assets [Line Items]    
Remainder of 2013 9,489  
2014 17,489  
2015 14,173  
2016 13,194  
2017 12,530  
2018 12,014  
Thereafter 114,925  
Net Balance $ 193,814