Loss Per Common Share - Calculation of Net Loss and Weighted Average Common Shares and Common Equivalent Shares Outstanding for Computation of Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Net loss	$ (6,768)	$ (1,050)
Loss attributable to common shareholders for diluted earnings per share	$ (6,768)	$ (1,050)
Weighted average number of common share equivalents:
Common shares used in basic loss per share	12,919,673	13,571,510
Total weighted average common shares and common share equivalents used in diluted loss per share	12,919,673	13,571,510
Loss per share:
Basic	$ (0.52)	$ (0.08)
Diluted	$ (0.52)	$ (0.08)