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Goodwill and Other Intangible Assets Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Dec. 31, 2013
Disclosure Goodwill And Other Intangible Assets Additional Information [Abstract]        
Goodwill $ 130,323   $ 130,323 $ 126,697
Total other intangible assets, net 107,795   107,795 103,011
Amortization expense of intangible assets 2,963 2,574 5,708  
Estimated Future Amortization Expense by Fiscal Year [Abstract]        
Remainder of 2014 6,000   6,000  
2015 11,800   11,800  
2016 11,800   11,800  
2017 11,500   11,500  
2018 9,800   9,800  
2019 8,500   8,500  
After 2019 $ 3,100   $ 3,100