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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

Number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of any shares forfeited. Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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