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Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Goodwill And Intangible Assets [Line Items]      
Amortization expense related to finite lived intangible assets $ 6,029 $ 4,925 $ 2,361
Amortization of finite lived intangible assets for 2014 5,900    
Amortization of finite lived intangible assets for 2015 5,900    
Amortization of finite lived intangible assets for 2016 5,900    
Amortization of finite lived intangible assets for 2017 5,900    
Amortization of finite lived intangible assets for 2018 $ 5,900