Stockholders' Equity and Derivative Liability - Warrants - Common Stock Offering (Details) - USD ($)				3 Months Ended
	Apr. 30, 2020	Mar. 27, 2020	Feb. 12, 2020	Mar. 31, 2020	Dec. 31, 2019
Controlled equity offering sales agreement
Common stock, par value				$ 0.0001	$ 0.0001
Proceeds from issuance of stock				$ 6,788,465
Sales Agreement
Controlled equity offering sales agreement
Common stock, par value			$ 0.0001
Maximum aggregate offering price		$ 4,600,000	$ 7,000,000
Issuance of stock (in shares)				2,311,867
Proceeds from issuance of stock				$ 6,800,000
Forecast
Controlled equity offering sales agreement
Issuance of stock (in shares)	5,262,806
Proceeds from issuance of stock	$ 11,300,000
Forecast | Sales Agreement
Controlled equity offering sales agreement
Issuance of stock (in shares)	2,950,939
Proceeds from issuance of stock	$ 4,500,000