Note 9 - Goodwill and Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Sep. 30, 2023
Intangible assets, gross carrying amount	$ 17,203	$ 14,620
Accumulated amortization	(7,460)	(6,193)
Finite-Lived Intangible Assets, Net	9,743	8,427
Developed Technology Rights [Member]
Intangible assets, gross carrying amount	14,232	11,930
Customer Relationships [Member]
Intangible assets, gross carrying amount	2,062	1,790
Trade Names [Member]
Intangible assets, gross carrying amount	610	605
Noncompete Agreements [Member]
Intangible assets, gross carrying amount		223
Patents [Member]
Intangible assets, gross carrying amount	$ 72	$ 72