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Earnings per Share (Tables)
 9 Months Ended
Jun. 30, 2017
Earnings Per Share [Abstract]  
Reconciliation of Weighted Average Common Shares Outstanding for Purposes of Calculating Basic and Diluted Earnings Per Share

The calculations of basic and diluted net income (loss) per share and basic and diluted weighted average shares outstanding are as follows for the three and nine months ended June 30, 2017 and 2016 (in thousands, except per share data):

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Three Months Ended

 

Nine Months Ended

 

 

 

June 30, 

 

June 30, 

 

 

    

2017

    

2016

    

2017

    

2016

    

Net income (loss)

 

$

17,350

 

$

8,564

 

$

45,226

 

$

(80,022)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Weighted average common shares outstanding used in computing basic earnings (losses) per share

 

 

69,711

 

 

68,628

 

 

69,496

 

 

68,437

 

Dilutive common stock options and restricted stock units

 

 

694

 

 

538

 

 

702

 

 

 —

 

Weighted average common shares outstanding used in computing diluted earnings (losses) per share

 

 

70,405

 

 

69,166

 

 

70,198

 

 

68,437

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Basic net income (loss) per share

 

$
0.25

 

$
0.12

 

$
0.65

 

$
(1.17)

 

Diluted net income (loss) per share

 

$
0.25

 

$
0.12

 

$
0.64

 

$
(1.17)