Stockholders' Equity - Common Stock Warrants (Details) - USD ($)	6 Months Ended
	Jun. 30, 2020	Jan. 21, 2020
Stockholders’ Equity
Warrants exchanged	3,291,666
January 2020 Offering
Stockholders’ Equity
Number of shares of common stock issuable through warrants		10,000,000
Common stock warrants
Stockholders’ Equity
Warrants exchanged	3,291,666
Number of shares of common stock exchanged for warrants	$ 2,238,332
Number of shares of common stock issuable through warrants	5,746,564
Weighted-average exercise price	$ 2.04
Common stock warrants | January 2020 Offering
Stockholders’ Equity
Warrants exercised	9,992,500
Number of shares of common stock exchanged for warrants	$ 7,494,375