Summary of Significant Accounting Policies - Net Loss per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Accounting Policies [Abstract]
Net loss	$ (2,589)	$ (3,691)
Weighted-average common shares outstanding basic (in shares)	5,896	5,800
Weighted-average common shares outstanding diluted (in shares)	5,896	5,800
Net loss per share
Net loss per share – basic (in dollars per share)	$ (0.44)	$ (0.64)
Net loss per share – diluted (in dollars per share)	$ (0.44)	$ (0.64)
Anti-dilutive weighted-average common shares excluded from calculation of diluted earnings per share (in shares)	176	297