Capital Structure - Warrants (Details) - $ / shares	Mar. 31, 2021	Jan. 31, 2021	Dec. 31, 2018
Common Stock Warrants
Number of shares available under warrant (in shares)			4,000,000
Exercise price per share (in dollars per share)		$ 0.001	$ 12.50
Common Stock
Common Stock Warrants
Number of shares available under warrant (in shares)	5,679,303
Common Stock Warrants Expiration May 2022 \| Common Stock
Common Stock Warrants
Number of shares available under warrant (in shares)	2,380
Exercise price per share (in dollars per share)	$ 8.68
Common Stock Warrants Expiration Date Of June 2024 \| Common Stock
Common Stock Warrants
Number of shares available under warrant (in shares)	4,000,000
Exercise price per share (in dollars per share)	$ 12.50
Common Stock Warrants No Expiration \| Common Stock
Common Stock Warrants
Number of shares available under warrant (in shares)	1,676,923
Exercise price per share (in dollars per share)	$ 0.001