Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical)

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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) (USD $)
12 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2010
CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY [Abstract]      
Purchase of treasury stock, shares (in shares) 1,015,879 1,319,375 1,070,173
Issuance of treasury stock, shares (in shares) 188,145 290,854 246,178
Dividends, per share (in dollars per share) $ 0.37 $ 0.33 $ 0.29