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5. SHAREHOLDERS' EQUITY (Details 1) - $ / shares
3 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Stockholders' equity    
Number Outstanding, Ending 13,500 15,500
Weighted-average remaining contract life 3 years 6 months 29 days  
Weighted Average Exercise Price Outstanding, Ending $ 6 $ 6
Number Options Exercisable 3,833  
Weighted-Average Exercise Price Options Exercisable $ 6