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Per Share Data
 3 Months Ended
Dec. 31, 2014
Earnings Per Share [Abstract]  
Per Share Data
Per Share Data
The following table sets forth the computation of basic and diluted net income per share (in thousands, except per share amounts): 
 
 
Three Months Ended 
 December 31,
 
 
 
2014
 
2013
 
Numerator for basic and diluted net income per share:
 
 
 
 
 
Net income attributable to ISSI
 
$
3,186

 
$
5,435

 
Denominator for basic net income per share:
 
 
 
 
 
Weighted average common shares outstanding
 
30,990

 
29,318

 
Dilutive stock options and awards
 
1,531

 
1,399

 
Denominator for diluted net income per share
 
32,521

 
30,717

 
Basic net income per share
 
$
0.10

 
$
0.19

 
Diluted net income per share
 
$
0.10

 
$
0.18

 

For the three months ended December 31, 2014 and December 31, 2013, stock options and awards for 538,000 shares and 2,749,000 shares, respectively, were excluded from diluted earnings per share by the application of the treasury stock method.