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Note 18 - Net Loss Per Share - Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2024	Jun. 30, 2023
Net loss	$ (6,682)	$ (6,938)	$ (6,724)	$ (1,423)	$ (3,403)	$ (3,507)	$ (20,344)	$ (8,334)
Basic and diluted loss per share (in dollars per share)	$ (0.15)			$ (0.04)			$ (0.46)	$ (0.23)
Weighted average shares outstanding - basic (in shares)	44,598,393			37,053,196
Weighted average shares outstanding - diluted (in shares)	44,598,393			37,053,196			44,216,602	36,855,014
Antidilutive (in shares)	6,977,251			3,742,765			6,977,251	3,742,765
Share-Based Payment Arrangement, Option [Member]
Weighted average shares outstanding - basic (in shares)							44,216,602	36,855,014
Antidilutive (in shares)	3,365,740			3,287,772			3,365,740	3,287,772
Restricted Stock Units (RSUs) [Member]
Assumed exercise of dilutive options (in shares)	0			0
Antidilutive (in shares)	273,059			385,429			273,059	385,429
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
Warrant [Member]
Antidilutive (in shares)	3,068,182			0			3,068,182	0