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Earnings per Share | 12 Months Ended
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Sep. 30, 2017
Earnings Per Share [Abstract] |
Earnings per Share | Earnings per Share The following table presents reconciliations for the numerators and denominators of basic and diluted earnings per share (“EPS”) during fiscal 2017, 2016 and 2015:
| Year Ended September 30,
| 2017 |  | 2016 |  | 2015
| (In thousands, except per share data)
Numerator for basic and diluted earnings per share — net income | $ | 128,256 |  |  | $ | 109,448 |  |  | $ | 86,502 |
Denominator — share: |  |  |  |  |
Basic weighted-average shares | 30,862 |  |  | 31,129 |  |  | 31,402 |
Effect of dilutive securities | 1,383 |  |  | 1,179 |  |  | 1,207 |
Diluted weighted-average shares | 32,245 |  |  | 32,308 |  |  | 32,609 |
Earnings per share: |  |  |  |  |
Basic | $ | 4.16 |  |  | $ | 3.52 |  |  | $ | 2.75 |
Diluted | $ | 3.98 |  |  | $ | 3.39 |  |  | $ | 2.65 |
The computation of diluted EPS excludes options to purchase approximately 8,000, 9,000, and 138,000 shares of common stock for fiscal 2017, 2016 and 2015, respectively, because the exercise prices of the options exceeded the average market price of our common stock in these fiscal years and their inclusion would be antidilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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