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Goodwill and Intangible Assets (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2010
Indefinite useful lives:      
Goodwill $ 43,421 $ 23,550 $ 21,021
Licenses 50,608 42,092  
Definite useful lives:      
Property, Plant and Equipment, Estimated Useful Lives 5 years    
Discounted Leases 27 46  
Unamortized Non Compete Agreements 1,150 1,045  
Intangible Assets, Net (Including Goodwill) $ 95,206 $ 66,733  
Maximum [Member]
     
Definite useful lives:      
Property, Plant and Equipment, Estimated Useful Lives 18 years    
Minimum [Member]
     
Definite useful lives:      
Property, Plant and Equipment, Estimated Useful Lives 6 years