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Goodwill and Intangible Assets (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2013
Unamortized Non Compete Agreements [Member]
Sep. 30, 2013
Maximum [Member]
Discounted Leases [Member]
Sep. 30, 2013
Minimum [Member]
Unamortized Non Compete Agreements [Member]
Indefinite useful lives:            
Goodwill $ 43,987 $ 43,421 $ 23,550      
Licenses 54,966 50,608 42,092      
Definite useful lives:            
Finite-Lived Intangible Asset, Useful Life       5 years 18 years 6 years
Discounted leases 168 27        
Unamortized non-compete agreements 897 1,150        
Total goodwill and intangible assets $ 100,018 $ 95,206