Warrants - Summary of Warrants Outstanding to Purchase Shares (Details) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Class Of Warrant Or Right [Line Items]
Number of warrants, Beginning balance	42,186,503
Number of warrants, Issued	29,291,614
Number of warrants, Exercised	(2,686,463)
Number of warrants, Expired	(26,018,662)
Number of warrants, Ending balance	42,772,992	42,186,503
Weighted average exercise price, Beginning balance	$ 1.14
Weighted average exercise price, Issued	0.72
Weighted average exercise price, Exercised	0.53
Weighted average exercise price, Expired	1.10
Weighted average exercise price, Ending balance	$ 0.90	$ 1.14
Cannex Capital Holdings Inc
Class Of Warrant Or Right [Line Items]
Number of warrants, Issued		42,186,503
Weighted average exercise price, Issued		$ 1.14