Note 8 - Goodwill and Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2024	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Impairment of Intangible Assets and Goodwill			$ 115,975	$ 0	$ 0
Goodwill, Impairment Loss			111,317
Amortization of Intangible Assets			51,300	$ 48,400	$ 32,300
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]	Impairment of Intangible Assets and Goodwill
B Medical Systems S.a.r.l. [Member]
Goodwill, Impairment Loss	$ 111,300		111,317
Sample Management Solutions [Member]
Goodwill, Impairment Loss		$ 0	(0)
Impairment of Intangible Assets, Finite-Lived	$ 4,700
Multiomics [Member]
Goodwill, Impairment Loss		$ 0	$ (0)