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Earnings per Share
 12 Months Ended
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.