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Intangible Assets Estimated Amortization Expense (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]    
2014 $ 646  
2015 646  
2016 646  
2017 646  
2018 646  
Thereafter 7,479  
Net $ 10,709 $ 11,355