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Goodwill and Other Intangible Assets - Summary of Estimated Amortization Expense (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Goodwill And Intangible Assets Disclosure [Abstract]    
2014 $ 94,763  
2015 58,713  
2016 48,503  
2017 43,255  
2018 38,542  
Thereafter 135,609  
Total $ 419,385 $ 468,312