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Note 8. Employee Stock Options (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Notes to Financial Statements |  |
Number of Options Outstanding, Beginning | 220,596 | 127,500
Number of Options Granted | 140,000 | 196,000
Number of Options Exercised | (74,360) | (25,154)
Number of Options expired or cancelled | 0 | (70,000)
Number of Options Forfeited | (5,400) | (7,750)
Number of Options Outstanding, Ending | 280,836 | 220,596
Range of Exercise Price Options Outstanding, Beginning | 0.01 - $3.33 | 1.70 - $2.32
Range of Exercise Price Options Granted | 7.76 - $8.25 | 0.01 - $3.33
Range of Exercise Price Options Exercised | 0.01 - $3.33 | 1.70 - $2.10
Range of Exercise Price Options expired or cancelled |  | 0.01
Range of Exercise Price Options Forfeited | 0.01 - $3.33 | 1.70 - $3.33
Range of Exercise Price Options Outstanding, Ending | 0.01 - $8.25 | 0.01 - $3.33
Weighted Average Exercise Price Outstanding, Beginning | $ 2.09 | $ 2.07
Weighted Average Exercise Price Granted | $ 7.90 | $ 1.37
Weighted Average Exercise Price Exercised | $ 2.14 | $ 2.04
Weighted Average Exercise Price expired or Canceled |  | $ 0.01
Weighted Average Exercise Price Forfeited | $ 1.39 | $ 2.45
Weighted Average Exercise Price Outstanding, Ending | $ 4.97 | $ 2.09
Aggregate Intrinsic Value Outstanding, Beginning | $ 257,835 | $ 24,590
Aggregate Intrinsic Value Granted | $ 0 | $ 370,750
Aggregate Intrinsic Value Exercised | 405,738 | 35,661
Aggregate Intrinsic Value Options expired or cancelled |  | 226,800
Aggregate Intrinsic Value Forfeited | $ 15,256 | $ 6,438
Aggregate Intrinsic Value Outstanding, Ending | $ 1,340,684 | $ 257,835

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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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