Summary of Significant Accounting Policies - Dilutive Effect (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Accounting Policies [Abstract]
Net (loss)	$ (9,640)	$ (743)
Weighted-average common shares outstanding (basic) (in shares)	5,830	5,759
Weighted-average common shares outstanding (diluted) (in shares)	5,830	5,759
Net (loss) income per share – basic (in dollars per share)	$ (1.65)	$ (0.13)
Net (loss) income per share – diluted (in dollars per share)	$ (1.65)	$ (0.13)
Anti-dilutive weighted-average common shares excluded from calculation of diluted earnings per share (in shares)	270	412