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Calculation Of Net Income Per Share
12 Months Ended
Dec. 31, 2017
Earnings Per Share [Abstract]  
Calculation Of Net Income Per Share Attributable To Verisign Stockholders
Calculation of Earnings per Share
The following table presents the computation of weighted-average shares used in the calculation of basic and diluted earnings per share:
 
Year Ended December 31,
 
2017
 
2016
 
2015
 
(In thousands)
Weighted-average shares of common stock outstanding
100,325

 
107,001

 
114,155

Weighted-average potential shares of common stock outstanding:
 
 
 
 
 
Conversion spread related to Subordinated Convertible Debentures
23,247

 
21,074

 
18,047

Unvested RSUs, and ESPP
608

 
758

 
829

Shares used to compute diluted earnings per share
124,180

 
128,833

 
133,031



The calculation of diluted weighted average shares outstanding, excludes potentially dilutive securities, the effect of which would have been anti-dilutive, as well as performance based RSUs granted by the Company for which the relevant performance criteria have not been achieved. The number of potential shares excluded from the calculation was not significant in any period presented.