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Earnings Per Share (Tables) | 6 Months Ended
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Mar. 31, 2016
Earnings Per Share [Abstract] |
Reconciliation of Numerators and Denominators of Basic and Diluted Earnings Per Share | The following table presents reconciliations for the numerators and denominators of basic and diluted earnings per share (“EPS”) for the quarters and six months ended March 31, 2016 and 2015:
| Quarter Ended March 31, |  | Six Months Ended March 31,
| 2016 |  | 2015 |  | 2016 |  | 2015
| (In thousands, except per share data)
Numerator for diluted and basic earnings per share: |  |  |  |  |  |  |
Net Income | $ | 23,116 |  |  | $ | 18,870 |  |  | $ | 42,357 |  |  | $ | 33,277 |
Denominator - share: |  |  |  |  |  |  |
Basic weighted-average shares | 31,268 |  |  | 31,335 |  |  | 31,226 |  |  | 31,639 |
Effect of dilutive securities | 994 |  |  | 1,113 |  |  | 1,123 |  |  | 1,152 |
Diluted weighted-average shares | 32,262 |  |  | 32,448 |  |  | 32,349 |  |  | 32,791 |
Earnings per share: |  |  |  |  |  |  |
Basic | $ | 0.74 |  |  | $ | 0.60 |  |  | $ | 1.36 |  |  | $ | 1.05 |
Diluted | $ | 0.72 |  |  | $ | 0.58 |  |  | $ | 1.31 |  |  | $ | 1.01 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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