Annual report pursuant to section 13 and 15(d)

Fair Value Measurements (Details)

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Fair Value Measurements (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2010
Fair Value Measurements [Abstract]      
Deferred retirement benefits, discount rate 4.50% 4.50%  
Impairment on assets held for sale $ 1,918      
Impairment charge to property     $ 908