Nature of Business - Going Concern (Details) - USD ($)	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Net loss	$ (10,473,847)	$ (3,613,975)	$ (3,943,819)	$ (22,773,281)	$ (3,538,810)	$ (6,312,606)	$ (18,031,641)	$ (32,624,697)
Accumulated deficit	69,511,465						69,511,465		$ 51,479,824
Cash, cash equivalents and restricted cash	$ 19,257,026			$ 15,451,992			$ 19,257,026	$ 15,451,992	$ 7,595,068	$ 1,778,613