Subsequent Events - Designation of Series B-1 Convertible Preferred Stock (Details) - USD ($)	1 Months Ended
	Oct. 31, 2019	Sep. 30, 2019
Subsequent Events.
Number of securities issued on conversion		9,580
Series 1 warrants | Subsequent event
Subsequent Events.
Warrant exercise agreement	1,250,000
Notice period for exercise of warrants	2 days
Preferred stock, par value (in dollars per share)	$ 12,201
Number of warrants are converted for each share	19,841
Warrants exercised	1,250,000
Gross proceeds	$ 1,750,000
Series B-1 Convertible Preferred Stock | Subsequent event
Subsequent Events.
Number of shares issued for each convertible preferred stock	10,001
Minimum percentage of beneficial ownership after conversion	4.99%
Beneficial ownership percentage prior to increase	9.99%
Prior notice period for increase in beneficial ownership percentage	61 days
Number of securities issued on conversion	63