Common Stock, Convertible Preferred Stock and Stockholders' Equity (Deficit) - Stock (Details) - USD ($)			1 Months Ended	3 Months Ended	6 Months Ended
	Mar. 23, 2020	Mar. 19, 2020	Feb. 29, 2020	Mar. 31, 2020	Mar. 31, 2020	Mar. 31, 2019	Mar. 22, 2020	Jan. 27, 2020	Dec. 23, 2019	Sep. 30, 2019	Apr. 12, 2019
Convertible Preferred Stock And Stockholders' Equity (Deficit) [Line Items]
Number of share issued		7,244,739				2,680,390
Gross cash proceeds						$ 20,000,000
Issuance of vested restricted stock units (in shares)					109	446
Deemed dividend upon amendment of the terms of the Series A-1 convertible preferred stock				$ 10,328,118	$ 10,328,118
Series A convertible preferred stock
Convertible Preferred Stock And Stockholders' Equity (Deficit) [Line Items]
Convertible preferred stock, shares authorized				1,000,000	1,000,000					1,000,000
Convertible preferred stock outstanding				0	0					0
Convertible Preferred Stock Series A-1
Convertible Preferred Stock And Stockholders' Equity (Deficit) [Line Items]
Number of share issued	29,358,621
Convertible preferred stock, shares authorized				200,000	200,000					200,000
Shares issued, price per share				$ 100.00	$ 100.00
Dividend rate					10.00%
Number of Series A convertible stock converted	68,112
Debt Instrument, Convertible, Conversion Price	$ 431.03447263						$ 18.89797
Deemed dividend upon amendment of the terms of the Series A-1 convertible preferred stock					$ 10,328,118
Convertible preferred stock outstanding				0	0					66,451
Preferred stock issued to settle dividends (in shares)				1,661		3,047
Warrant
Convertible Preferred Stock And Stockholders' Equity (Deficit) [Line Items]
Number of share issued				13,003,414
Exercise price per share	$ 0.232			$ 0.232	$ 0.232			$ 0.232	$ 0.2320		$ 2.90
Private Placement
Convertible Preferred Stock And Stockholders' Equity (Deficit) [Line Items]
Number of share issued			2,460,630
Shares issued, price per share			$ 1.016
Exercise price per share			$ 0.9535