Note 5 - Trade Accounts and Notes Receivable - Schedule of Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Beginning of period	$ 125	$ 591
Provision for credit losses	43	286
Recoveries	(72)	(166)
Write-offs	(7)	(6)
Currency translation	3	(16)
End of period	$ 92	$ 689