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Goodwill and Intangibles - Schedule of Future Amortization Expense for Finite Lived Intangible Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Aug. 31, 2013
Goodwill And Intangible Assets Disclosure [Abstract]  
2014 $ 4,100
2015 4,100
2016 4,100
2017 4,100
2018 2,553
Thereafter 8,163
Total future amortization expense $ 27,116