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Note 5. Stock Options (Details) (USD $)
 9 Months Ended
Sep. 30, 2014
Option 1
  
Exercise Price Range $0.01 - $1.00
Number of Options Outstanding 19,700
Weighted Average Remaining Contractual Life (in Years) 7 years 3 months 22 days
Weighted Average Exercise Price $ 0.01
Number of Options Exercisable 19,700
Option 2
  
Exercise Price Range $1.01 - $2.00
Number of Options Outstanding 9,050
Weighted Average Remaining Contractual Life (in Years) 6 years 7 months 24 days
Weighted Average Exercise Price $ 1.76
Number of Options Exercisable 9,050
Option 3
  
Exercise Price Range $2.01 - $3.00
Number of Options Outstanding 37,986
Weighted Average Remaining Contractual Life (in Years) 4 years 5 months 5 days
Weighted Average Exercise Price $ 2.49
Number of Options Exercisable 20,486
Option 4
  
Exercise Price Range $3.01 - $4.00
Number of Options Outstanding 15,150
Weighted Average Remaining Contractual Life (in Years) 7 years 6 months
Weighted Average Exercise Price $ 3.33
Number of Options Exercisable 15,150
Option 5
  
Exercise Price Range $4.01 - $8.00
Number of Options Outstanding 98,750
Weighted Average Remaining Contractual Life (in Years) 6 years 6 months 25 days
Weighted Average Exercise Price $ 7.76
Number of Options Exercisable 23,750
Option 6
  
Exercise Price Range $8.01 - $10.00
Number of Options Outstanding 40,000
Weighted Average Remaining Contractual Life (in Years) 3 years 10 months 20 days
Weighted Average Exercise Price $ 8.25
Number of Options Exercisable 12,500
Option 7
  
Exercise Price Range $10.01-$13.49
Number of Options Outstanding 40,000
Weighted Average Remaining Contractual Life (in Years) 4 years 5 months 8 days
Weighted Average Exercise Price $ 13.49
Number of Options Exercisable 5,000
Total
  
Number of Options Outstanding 260,636
Weighted Average Remaining Contractual Life (in Years) 5 years 7 months 17 days
Weighted Average Exercise Price $ 6.90
Number of Options Exercisable 105,636