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Basis of Presentation (Tables)
 3 Months Ended
Mar. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Dilutive and Antidilutive Options

The dilutive and antidilutive options are shown separately in the table below.

 

Three Months Ended March 31,

    2016      2015  

Additional shares

         1,030,900   

Antidilutive options

      2,878,700         1,178,900