Annual report pursuant to Section 13 and 15(d)

Estimated Aggregate Future Amortization Expense for Intangible Assets (Detail)

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Estimated Aggregate Future Amortization Expense for Intangible Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]      
For the year ended December 31, 2014 $ 6,226    
For the year ended December 31, 2015 5,988    
For the year ended December 31, 2016 5,876    
For the year ended December 31, 2017 5,319    
For the year ended December 31, 2018 5,225    
Thereafter 26,686    
Total $ 55,320 $ 20,567 $ 27,068