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Equity (Tables)
3 Months Ended
Mar. 31, 2017
Equity [Abstract]  
Summary of Stock Option Plans

A summary of stock option activity for the three months ended March 31, 2017 is as follows:

 

   

 

 

Number

of Options

(in shares)

   

Weighted

Average

Exercise

Price Per Share

    Weighted Average Remaining Contractual Life    

 

 

Aggregate Intrinsic Value

 
                                 
Outstanding at December 31, 2016     2,050,369     $ 3.62                  
Granted     90,000       0.25                  
Exercised                            
Forfeited or expired     (229,879 )   $ 1.74                  
Outstanding at March 31, 2017     1,910,490     $ 3.56       3.6 years     $ 25  
Exercisable at March 31, 2017     1,397,904     $ 3.80       3.4 years     $ 15

Summary of Warrant Activity

The Company previously issued warrants at exercise prices equal to or greater than market value of the Company’s common stock at the date of issuance. A summary of warrant activity follows:

 

   

Number

of Warrants

(in shares)

    Weighted Average Exercise Price Per Share     Weighted Average Remaining Contractual Life  
                         
Outstanding at December 31, 2016     2,654,423     $ 1.46          
Granted                    
Exercised                    
Forfeited or expired                    
Outstanding at March 31, 2017     2,654,423     $ 1.46       2.9 years