Summary of Significant Accounting Policies - Net Loss per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net loss	$ (634)	$ (2,668)	$ (5,590)	$ (2,720)
Weighted-average common shares outstanding basic (in shares)	5,940,000	5,840,000	5,925,000	5,827,000
Weighted-average common shares outstanding diluted (in shares)	5,940,000	5,840,000	5,925,000	5,827,000
Net loss per share
Net loss per share – basic (in dollars per share)	$ (0.11)	$ (0.46)	$ (0.94)	$ (0.47)
Net loss per share – diluted (in dollars per share)	$ (0.11)	$ (0.46)	$ (0.94)	$ (0.47)
Anti-dilutive weighted-average common shares excluded from calculation of diluted earnings per share (in shares)	211,000	313,000	187,000	309,000
Restricted shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Restricted and performance shares (in shares)	0	0	0	0
Performance shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Restricted and performance shares (in shares)	0	0	0	0