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Goodwill and Other Intangible Assets (Details 3) (USD $)
1 Months Ended
Feb. 29, 2012
Aug. 31, 2012
Aug. 31, 2011
Aug. 31, 2010
Future estimated amortization expense for the Company's trade names intangible assets        
Net carrying amount   $ 27,685,000 $ 29,933,000 $ 3,623,000
Goodwill And Other Intangible Assets (Textual) [Abstract]        
Impairment of goodwill 0      
Trade Names [Member]
       
Future estimated amortization expense for the Company's trade names intangible assets        
Fiscal year 2013   1,860,000    
Fiscal year 2014   1,860,000    
Fiscal year 2015   1,860,000    
Fiscal year 2016   1,860,000    
Fiscal year 2017   1,860,000    
Thereafter   18,385,000    
Net carrying amount   $ 27,685,000