Annual report pursuant to Section 13 and 15(d)

Loss per common share - Schedule of Loss Per Common Share, Basic and Diluted (Details)

v3.20.1
Loss per common share - Schedule of Loss Per Common Share, Basic and Diluted (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Net loss attributable to stockholders $ (4,709,019) $ (5,708,532)
Weighted average shares outstanding - basic and diluted 24,839,957 24,815,926
Net loss per share - basic and diluted $ (0.19) $ (0.23)
Stock Options    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Anti-dilutive shares underlying stock options outstanding 142,756 144,077