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Line Of Credit And Notes Payable (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Aug. 31, 2012
Aug. 31, 2011
Revolving Line Of Credit [Member]
    
Line Of Credit And Notes Payable [Line Items]    
Maximum borrowing capacity $ 10.0  
Maturity date Mar. 14, 2012  
Interest rate 2.70% 2.70%
Unused credit fee 0.25%  
Term Loan Payable [Member]
    
Line Of Credit And Notes Payable [Line Items]    
Maximum borrowing capacity 5.0  
Percentage added to LIBOR rate 2.65%  
Interest rate 2.90% 2.90%
Term loan payable, amount drawn 5.0  
Term loan payable, time period of repayment 24 equal monthly installments  
First Modification Agreement [Member] | Revolving Line Of Credit [Member]
    
Line Of Credit And Notes Payable [Line Items]    
Maturity date Mar. 31, 2013  
Second Modification Agreement [Member] | Revolving Line Of Credit [Member]
    
Line Of Credit And Notes Payable [Line Items]    
Maximum borrowing capacity 10.0  
Maturity date Mar. 31, 2015  
Line of credit facility, term to ensure availability 3 years  
Percentage added to LIBOR rate 2.50%  
Unused credit fee 0.33%  
Maximum funded debt to EBITDAR ratio 300.00%  
Minimum fixed charge coverage ratio 150.00%  
Limit on capital expenditures $ 8.0