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7. Stock Based Compensation (Details Narrative) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Options vested 0  
Closing price of common stock $ 17.25  
Unrecognized share-based compensation expense $ 659,000  
Unrecognized share-based compensation expense period of recogntion 2 years 4 months 24 days  
2016 Stock Incentive Plan    
Options vested 15,000 15,000