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Goodwill and Other Intangible Assets - Estimated Amortization Expense (Detail) (USD $)
In Thousands, unless otherwise specified
Aug. 31, 2013
Goodwill And Intangible Assets Disclosure [Abstract]  
2014 $ 3,180
2015 3,063
2016 3,004
2017 3,004
2018 2,765
2019 $ 2,302