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2. Stock Option Plan (Tables)
 3 Months Ended
Mar. 31, 2017
Tables/Schedules  
Schedule of Stock Option Plan Activity A summary of activity in the stock option plan for the three months ended March 31, 2017 follows (shares in thousands):

 

 

 

 

Weighted-

 

 

 

Average

 

Number

 

Exercise

 

of Shares

 

Price

 

 

 

 

Outstanding as of beginning of the period

              1,625 

   $            0.88

Granted

                  140 

                  1.39

Exercised

                       - 

Forfeited or expired

                (156)

                  3.62

Outstanding as of end of the period

              1,609 

                  0.66

 

Exercisable as of end of the period

              1,145 

   $            0.51
Schedule of Stock Options Valuation Assumptions The weighted average values of employee stock options granted under the stock option plan, as well as the weighted average assumptions used in calculating these values during the first three months of 2017, were based on estimates as of the date of grant as follows:

 

Risk-free interest rate

 

       1.47%

Dividend yield

 

       0.00%

Volatility

 

   176%

Expected life

 

        3.5 years