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Note 2. Summary of Significant Accounting Policies (Details Narrative) - shares
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Stock Options and Restricted Stock Units        
Antidilutive securities excluded from computation of earnings per share 49,500 201,250 55,167 201,250