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Net Income Per Share (Tables)
 12 Months Ended
Dec. 31, 2016
Earnings Per Share [Abstract]  
Reconciliation used in Computing Basic and Diluted Net Income per Share
The following is a reconciliation of the numerators and denominators used in computing basic and diluted net income (loss) per share:
 
Years Ended December 31,
 
2016
 
2015
 
2014
 
(In thousands, except per share amounts)
Numerator:
 
 
 
 
 
  Income (loss) from continuing operations
$
(40,030
)
 
$
2,858

 
$
4,123

  Income from discontinued operations, net of tax
$
649

 
$
—

 
$
—

   Net income (loss) used in computing basic net income (loss) per share
$
(39,381
)
 
$
2,858

 
$
4,123

Denominator:
 
 
 
 
 
  Shares used in computation of basic net income (loss) per share (weighted average common shares outstanding)
28,759

 
28,097

 
28,246

Dilutive potential common shares:
 
 
 
 
 
Stock options, ESPP, Restricted Stock and RSUs
—

 
918

 
898

Shares used in computation of diluted net income (loss) per share
28,759

 
29,015

 
29,144

 
 
 
 
 
 
Basic net income (loss) per share:
 
 
 
 
 
    Continuing Operations
$
(1.39
)
 
$
0.10

 
$
0.15

    Discontinued Operations
$
0.02

 
$
0.00

 
$
0.00

        Total
$
(1.37
)
 
$
0.10

 
$
0.15

 
 
 
 
 
 
Diluted net income (loss) per share:
 
 
 
 
 
    Continuing Operations
$
(1.39
)
 
$
0.10

 
$
0.14

    Discontinued Operations
$
0.02

 
$
0.00

 
$
0.00

        Total
$
(1.37
)
 
$
0.10

 
$
0.14
Schedule of antidilutive securities excluded from computation of earnings per share
As of December 31, 2016, the Company had securities outstanding that could potentially dilute basic earnings per share in the future, but these were excluded from the computation of diluted net loss per share for the year ended December 31, 2016 since their effect would have been anti-dilutive. These outstanding securities consisted of the following:
 
December 31,
 
 
2016
 
Standard and market condition stock options outstanding
3,646,121

 
Restricted stock awards outstanding
77,540

 
RSUs outstanding
427,192

 
ESPP
17,506