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7. Stock Based Compensation (Details Narrative) - USD ($)
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Options vested 2,187  
Closing price of common stock $ 6.19  
Unrecognized share-based compensation expense $ 1,100,000  
Unrecognized share-based compensation expense period of recogntion 3 years 2 months 12 days  
2016 Stock Incentive Plan    
Options vested 26,000 24,000