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Commitments and Contingencies (Details Textual) (USD $)
 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2008
Jun. 30, 2012
Mar. 21, 2012
Jul. 31, 2010
Jan. 01, 2008
Aug. 31, 2012
Operating Lease Expense [Member]
Sep. 30, 2011
Operating Lease Expense [Member]
Sep. 30, 2010
Operating Lease Expense [Member]
Payments for Rent                   $ 2,900,000 $ 3,000,000 $ 2,700,000
Visitor Surcharge                 5      
Income taxes   4,374,000 5,403,000 2,998,000 2,000,000              
Texas patron tax liability 6,830,000 9,849,000 6,830,000         2,100,000        
Patron Tax Expense   3,000,000 2,900,000 2,800,000                
Loss Contingency, Settlement Agreement, Consideration   155,000       200,000 2,650,000          
Loss Contingency, Settlement Agreement, Terms The settlement amount will be paid with approximately $850,000 in insurance proceeds and a cash payment from the Company of approximately $1.8 million                      
Settlement of lawsuits $ 1,800,000 $ 1,800,000