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Goodwill and Intangible Assets - Additional Information (Detail) (USD $)
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Goodwill And Intangible Assets Disclosure [Abstract]    
Amortization expense of finite life intangible assets $ 1,838,000 $ 159,000
Amortization expense of finite life intangibles for 2014 5,200,000  
Amortization expense of finite life intangibles for 2015 7,100,000  
Amortization expense of finite life intangibles for 2016 6,100,000  
Amortization expense of finite life intangibles for 2017 5,200,000  
Amortization expense of finite life intangibles for 2018 $ 4,000,000