NET INCOME (LOSS) PER COMMON SHARE (Tables)
 3 Months Ended
Mar. 31, 2015
Earnings Per Share [Abstract]  
Schedule of basic and diluted earnings per share
The following table sets forth a reconciliation of basic and diluted net income (loss) per common share (in thousands except per common share amounts):

 
Three Months Ended 
 March 31,
 
2015
 
2014
Net income (loss)
$
4,386

 
$
(10,474
)
 


 


Shares used in computing basic net income (loss) per common share
75,408

 
72,498

     Add effect of dilutive securities:
 
 
 
          Employee stock options
1,639

 
—

          Employee stock purchase plan
71

 
—

          Restricted stock and restricted stock units
1,636

 
—

Shares used in computing diluted net income (loss) per common share
78,754

 
72,498

 
 
 
 
Basic net income (loss) per common share
$
0.06

 
$
(0.14
)
Diluted net income (loss) per common share
$
0.06

 
$
(0.14
)
Securities excluded from diluted earnings per common share on an actual outstanding basis
The potential dilutive securities excluded from diluted net income (loss) per common share were as follows (in thousands):

 
Three Months Ended March 31,
 
2015
 
2014
Employee stock options
2,309

 
5,068

Employee stock purchase plan
—

 
173

Restricted stock and restricted stock units
1,359

 
4,419

Convertible notes
17,857

 
17,857

Total
21,525

 
27,517