Note 17 - Net (Loss) Income Per Share - Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2024	Mar. 31, 2023
Net loss	$ (6,938)	$ (6,724)	$ (3,403)	$ (3,507)	$ (13,662)	$ (6,910)
Basic and diluted loss per share (in dollars per share)	$ (0.16)		$ (0.09)		$ (0.31)	$ (0.19)
Weighted average shares outstanding - basic (in shares)	44,247,858		36,817,026
Weighted average shares outstanding - diluted (in shares)	44,247,858		36,817,026		44,026,750	36,755,920
Antidilutive (in shares)	3,940,925		4,649,599		3,940,925	4,649,599
Share-Based Payment Arrangement, Option [Member]
Weighted average shares outstanding - basic (in shares)					44,026,750	36,755,920
Antidilutive (in shares)	3,377,824		4,187,022		3,377,824	4,187,022
Restricted Stock Units (RSUs) [Member]
Assumed exercise of dilutive options (in shares)	0		0
Antidilutive (in shares)	292,831		393,013		292,831	393,013
Obligation to Issue Common Stock [Member]
Assumed exercise of dilutive options (in shares)					0	0
Antidilutive (in shares)	270,270		69,564		270,270	69,564