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Stock Options Excluded from Calculation of Diluted Net Loss Per Share (Details Narrative) - shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Net income (loss) per share:    
Stock Options Excluded from Calculation of Diluted Net Income (Loss) Per Share 2,437,006 2,169,436
Dilutive conversion shares 1,047,945