Quarterly report pursuant to Section 13 or 15(d)

Net Income (Loss) Per Share - Summary of Basic and Diluted Net Income (Loss) Per Share (Details)

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Net Income (Loss) Per Share - Summary of Basic and Diluted Net Income (Loss) Per Share (Details) - USD ($)
3 Months Ended 6 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Numerator:            
Net income (loss) attributable to common stockholders $ 544,901 $ 1,281,290 $ (2,539,363) $ (2,297,240) $ (1,994,461) $ (1,015,950)
Denominator:            
Weighted average common shares outstanding - basic 15,777,158 13,208,864     14,825,351 12,052,175
Effect of dilutive securities 613,048 1,340,490        
Weighted average common shares outstanding - diluted 16,390,206 14,549,354     14,825,351 12,052,175
Net income (loss) per common share attributable to common stockholders:            
Basic $ 0.03 $ 0.10     $ (0.13) $ (0.08)
Diluted $ 0.03 $ 0.09     $ (0.13) $ (0.08)