Annual report pursuant to section 13 and 15(d)

Treasury Stock (Schedule of Information Relating to Purchases) (Details)

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Treasury Stock (Schedule of Information Relating to Purchases) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2010
Equity, Class of Treasury Stock [Line Items]      
Total dollar value of shares purchased $ 298 $ 1,205 $ 628
Common Stock [Member]
     
Equity, Class of Treasury Stock [Line Items]      
Total number of shares purchased 12,332 48,280 23,466
Average price paid per share $ 24.12 $ 24.96 $ 26.74
Total shares purchased as part of publicly announced plan or program 181,316 168,984 120,704
Total dollar value of shares purchased $ 298 $ 1,205 $ 628