Equity Distribution Agreement and Sale of Common Stock (Details) - USD ($)	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Sep. 30, 2021	Apr. 24, 2020
Subsidiary, Sale of Stock [Line Items]
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Proceeds from sale of common stock, gross	$ 636,000	$ 878,000
Sales Agreement With Northland
Subsidiary, Sale of Stock [Line Items]
Common stock, par value (in dollars per share)				$ 0.01
Maximum aggregate offering price				$ 13,900,000
Commission rate	3.00%
Issuance of common shares (in shares)	320,787
Proceeds from sale of common stock, gross	$ 700,000
Proceeds from sale of common stock, net	$ 600,000