Note 5 - Revenue Recognition - Contract Asset and Contract Liabilities (Details) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2024	Sep. 30, 2023
Balance as of September 30, 2022	$ 4,020
New performance obligations	6,199
Recognition of revenue as a result of satisfying performance obligations	(5,134)
Effect of exchange rate on deferred revenue	(2)
Balance as of March 31, 2023	5,083
Less: non-current portion	(445)	$ (551)
Current portion as of March 31, 2023	4,638
Customer Deposits [Member]
Balance as of September 30, 2022	766
New performance obligations	2,272
Recognition of revenue as a result of satisfying performance obligations	(2,116)
Effect of exchange rate on deferred revenue	0
Balance as of March 31, 2023	922
Less: non-current portion	0
Current portion as of March 31, 2023	922
Deferred Revenue [Member]
Balance as of September 30, 2022	3,254
New performance obligations	3,927
Recognition of revenue as a result of satisfying performance obligations	(3,018)
Effect of exchange rate on deferred revenue	(2)
Balance as of March 31, 2023	4,161
Less: non-current portion	(445)
Current portion as of March 31, 2023	$ 3,716