Note 11 - Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Goodwill, Ending Balance	$ 736	$ 736
Finite-Lived Intangible Assets, Net	1,649	4,805
Impairment of Intangible Assets, Finite-Lived	2,761	0
Amortization of Intangible Assets	395	$ 768
Adjacent Markets [Member]
Goodwill, Ending Balance	700
Finite-Lived Intangible Assets, Net	500
Oil and Gas Markets [Member]
Finite-Lived Intangible Assets, Net	1,200
Impairment of Intangible Assets, Finite-Lived	$ 2,800