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Note 5. Stock Options (Tables)
3 Months Ended
Mar. 31, 2014
Notes to Financial Statements  
Schedule Of Stock Options
      Options Outstanding     Options Exercisable  
Exercise Price Range     Number     Weighted Average Remaining Contractual Life (in Years)     Weighted Average Exercise Price     Number  
$ 0.01 - $1.00       24,300       7.81     $ 0.01       24,300  
$ 1.01 - $2.00       12,050       7.15     $ 1.74       12,050  
$ 2.01 - $3.00       49,486       4.95     $ 2.47       23,236  
$ 3.01 - $4.00       16,650       8.00     $ 3.33       16,650  
$ 4.01 - $8.00       100,000       7.10     $ 7.76       12,500  
$ 8.01 - $10.00       40,000       4.39     $ 8.25       7,500  
$ 10.01-$13.49       40,000       4.94     $ 13.49       0  
Total       282,486       6.15     $ 6.53       96,236