Net Loss per Share - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2020	Sep. 30, 2019	Mar. 31, 2019
Class Of Warrant Or Right [Line Items]
Proceeds from exercise of pre-funded warrants		$ 31,768
Pre-funded Warrants
Class Of Warrant Or Right [Line Items]
Exercise price of warrants	$ 0.01	$ 0.01
Private Placement | Institutional Accredited Investors
Class Of Warrant Or Right [Line Items]
Exercise price of warrants	$ 0.65	$ 0.65	$ 0.65
Private Placement | Institutional Accredited Investors | Pre-funded Warrants
Class Of Warrant Or Right [Line Items]
Issuance of warrants, shares	5,411,687	5,411,687	5,411,687
Number of securities called by warrants	5,411,687	5,411,687	5,411,687
Exercise price of warrants	$ 0.64	$ 0.64	$ 0.64
Exercise price of warrants, exercisable subject to beneficial ownership limitations	$ 0.01	$ 0.01	$ 0.01
Warrants exercised	3,176,762	3,176,762
Proceeds from exercise of pre-funded warrants	$ 31,768	$ 31,768
Unexercised warrants outstanding	2,234,925	2,234,925		0