Note 2 - Accounting Policies - Revenues Allocations to Reportable Segments (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Revenues	$ 21,325,000	$ 19,746,000
Medical Equipment Leasing [Member]
Revenues	17,772,000	16,655,000
Direct Patient Services [Member]
Revenues	$ 3,553,000	$ 3,091,000