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Note 17 - Net (Loss) Income Per Share - Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Net (loss) income	$ (18,396)	$ (16,212)
Diluted (loss)income per share (in dollars per share)	$ (0.5)	$ (0.44)
Weighted average shares outstanding - basic (in shares)	36,939,335	36,495,012
Assumed exercise of dilutive options (in shares)	0	0
Weighted average shares outstanding - diluted (in shares)	36,939,335	36,495,012
Options (in shares)	3,359,515	4,423,202
Share-Based Payment Arrangement, Option [Member]
Options (in shares)	2,904,522	3,940,899
Restricted Stock Units (RSUs) [Member]
Options (in shares)	385,429	343,175
Obligation to Issue Common Stock [Member]
Options (in shares)	69,564	139,128

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