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Mezzanine and Shareholders' Equity - Summary of Remaining Unrecognized Share based Compensation of Stock Option (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]      
Share-based compensation expense $ 607,146 $ 809,528 $ 2,113,116
General and administrative      
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]      
Share-based compensation expense $ 607,146 $ 809,528 $ 2,113,116