Summary of Significant Accounting Policies - Net Loss per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Accounting Policies [Abstract]
Net loss	$ (1,590)	$ (2,367)	$ (5,013)	$ (4,956)
Weighted-average common shares outstanding basic (in shares)	6,009	5,940	5,983	5,918
Weighted-average common shares outstanding diluted (in shares)	6,009	5,940	5,983	5,918
Net loss per share – basic (in dollars per share)	$ (0.26)	$ (0.40)	$ (0.84)	$ (0.84)
Net loss per share – diluted (in dollars per share)	$ (0.26)	$ (0.40)	$ (0.84)	$ (0.84)
Anti-dilutive weighted-average common shares excluded from calculation of diluted earnings per share (in shares)	258	196	253	186