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Goodwill and Other Intangible Assets - Schedule of Estimated Future Amortization (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Estimated Amortization Expense [Line Items]    
2013 $ 1,437  
2014 725  
2015 136  
2016 136  
2017 136  
2018 and thereafter 194  
Net Book Value of Amortizable intangible assets, net $ 2,764 $ 4,322