Note 3 - Discontinued Operations - Schedule of Disposal Groups - Non-cash Items (Details) - B Medical Systems Business [Member] - Discontinued Operations, Held-for-Sale [Member] - Discontinued Operations [Member] - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Depreciation and amortization	$ 3,846	$ 7,219
Capital expenditures	$ 757	$ 1,246