CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares |
12 Months Ended | ||
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Sep. 30, 2017 |
Sep. 30, 2016 |
Sep. 30, 2015 |
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| Statement of Stockholders' Equity [Abstract] | |||
| Purchase of treasury stock, shares (in shares) | 212,424 | 1,132,452 | 304,859 |
| Issuance of treasury stock, shares (in shares) | 221,958 | 404,307 | 334,850 |
| Cancellation of treasury stock, shares (in shares) | 2,640 | 5,237 | 34,789 |
| Dividends, per share (in dollars per share) | $ 0.54 | ||
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- Definition Aggregate dividends paid during the period for each share of common stock outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Number of treasury shares (units) reissued during the period, excluding reissuance of shares (units) held in treasury used to satisfy equity-based compensation obligations exercised by the holders of such rights. Upon reissuance of shares (units) from treasury, either the common or preferred stock (unit) reissued is outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Number of shares that have been repurchased during the period and are being held in treasury. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Number of shares of common and preferred stock retired from treasury during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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