Note 11 - Goodwill and Other Intangible Assets - Schedule of Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Goodwill, gross	$ 5,072	$ 5,072
Goodwill, accumulated impairment losses	(4,336)	(4,336)
Goodwill	$ 736	736
Weighted average remaining useful life (Year)	2 years 3 months 18 days
Other intangible assets, gross	$ 8,383	12,583
Accumulated amortization	(6,734)	(7,778)
Finite-Lived Intangible Assets, Net	$ 1,649	4,805
Developed Technology Rights [Member]
Weighted average remaining useful life (Year)	4 years 6 months
Other intangible assets, gross	$ 2,275	6,475
Customer Relationships [Member]
Other intangible assets, gross	$ 3,900	3,900
Trade Names [Member]
Weighted average remaining useful life (Year)	1 month 6 days
Other intangible assets, gross	$ 2,022	2,022
Noncompete Agreements [Member]
Weighted average remaining useful life (Year)	1 month 6 days
Other intangible assets, gross	$ 186	186
Emerging Markets [Member]
Goodwill, gross	4,336	4,336
Adjacent Markets [Member]
Goodwill, gross	736	$ 736
Goodwill	700
Finite-Lived Intangible Assets, Net	$ 500