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EARNINGS PER SHARE (Tables) | 6 Months Ended
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Mar. 31, 2013
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share Basic and Diluted Table | The following table presents the calculation of the Company's basic and diluted earnings per share for:
| Three Months Ended | Six Months Ended
| March 31, | March 31,
(Thousands, except per share amounts) | 2013 | 2012 | 2013 | 2012
Net income, as reported | $ | 45,469 |  | $ | 54,535 |  | $ | 105,675 |  | $ | 111,892 |
Basic earnings per share |  |  |  |
Weighted average shares of common stock outstanding-basic | 41,789 |  | 41,509 |  | 41,742 |  | 41,472 |
Basic earnings per common share | $1.09 | $1.31 | $2.53 | $2.70
Diluted earnings per share |  |  |  |
Weighted average shares of common stock outstanding-basic | 41,789 |  | 41,509 |  | 41,742 |  | 41,472 |
Incremental shares (1) | 183 |  | 202 |  | 183 |  | 201 |
Weighted average shares of common stock outstanding-diluted | 41,972 |  | 41,711 |  | 41,925 |  | 41,673 |
Diluted earnings per common share (2) | $1.08 | $1.31 | $2.52 | $2.68
(1) | Incremental shares consist of stock options, stock awards and performance units.
(2) | There were no anti-dilutive shares excluded from the calculation of diluted earnings per share for the three and six months ended March 31, 2013 and 2012.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
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