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Employee Benefit Plans (Components Of Net Periodic Postretirement Benefit Cost) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2010
Employee Benefit Plans [Abstract]      
Service cost $ 23 $ 40 $ 33
Interest cost 17 39 39
Prior service cost 51 115 115
Net gain recognized (107) (37) (49)
Net periodic postretirement benefit cost $ (16) $ 157 $ 138