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Net Income Per Share (Tables)
 6 Months Ended
Jun. 30, 2014
Earnings Per Share [Abstract]  
Computation of basic and diluted earnings per share
The following table sets forth the computation of basic and diluted earnings or (loss) per share attributable to the Company (in thousands, except per share data):
 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
 
2014
 
2013
 
2014
 
2013
Numerator:
 
 
 
 
 
 
 
Net loss attributable to the Company
$
(4,088
)
 
$
(6,469
)
 
$
(22,364
)
 
$
(5,618
)
Denominator for basic and diluted net income per share:
 
 
 
 
 
 
 
Weighted average common shares outstanding for basic
46,832

 
44,412

 
46,320

 
44,220

Weighted average common shares outstanding for diluted
46,832

 
44,412

 
46,320

 
44,220

Basic net loss per share attributable to the Company
$
(0.09
)
 
$
(0.15
)
 
$
(0.48
)
 
$
(0.13
)
Diluted net loss per share attributable to the Company
$
(0.09
)
 
$
(0.15
)
 
$
(0.48
)
 
$
(0.13
)
Anti-dilutive common stock equivalents not included in calculation of net income per diluted share
The following weighted outstanding common stock equivalents were not included in the calculation of net income (loss) per diluted share because their effects were anti-dilutive (in thousands):
 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
 
2014
 
2013
 
2014
 
2013
Stock options, ESPP shares and restricted stock units
8,949

 
7,953

 
8,409

 
7,518

Warrants
9,553

 
14,641

 
9,553

 
14,667

Senior Convertible Notes
9,553

 
9,553

 
9,553

 
10,232

Total
28,055

 
32,147

 
27,515

 
32,417