Note 5 - Trade Accounts and Financing Receivables - Schedule of Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Beginning of period	$ 4	$ 125
Provision for credit losses	0	43
Recoveries	0	(72)
Write-offs	0	(7)
Currency translation	0	3
End of period	$ 4	$ 92