Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) (Parenthetical)

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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) (Parenthetical) - $ / shares
9 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Statement of Stockholders' Equity [Abstract]    
Purchase of treasury stock, shares (in shares) 1,130,875 212,783
Issuance of treasury stock, shares (in shares) 374,108 332,183
Cancellation of treasury stock, shares (in shares) 5,237 34,789
Dividends, per share (in dollars per share) $ 0.45 $ 0.39