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Debt - Principal Payments on Debt (Detail) (USD $)
Dec. 31, 2013
Debt Disclosure [Abstract]  
For the year ended December 31, 2014 $ 25,700,000
For the year ended December 31, 2015   
For the year ended December 31, 2016   
For the year ended December 31, 2017 969,100,000
For the year ended December 31, 2018 300,000,000
For the years ended thereafter