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Net Loss Per Share Applicable to Common Stockholders
 3 Months Ended
Jul. 31, 2017
Earnings Per Share [Abstract]  
Net Loss Per Share Applicable to Common Stockholders
Net Loss Per Share
The following table sets forth the computations of net loss per share applicable to common stockholders for the three months ended July 31, 2017 and 2016, respectively (in thousands, except net loss per share data):
 
Three Months Ended July 31,
 
2017
 
2016
Net loss
$
(2,316
)
 
$
(5,105
)
Basic and diluted loss per share
$
(0.03
)
 
$
(0.06
)
Basic and diluted weighted average number of shares outstanding
84,663

 
82,214

Potentially dilutive securities (1):
 
 
 
Outstanding stock options
485

 
132

Restricted shares
1,278

 
47

(1)
The impact of potentially dilutive securities on earnings per share is anti-dilutive in a period of net loss.