Note 3 - Accounting Policies - Allocations to Reportable Segments (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Depreciation and amortization	$ 5,165,000	$ 4,783,000
Interest expense	1,112,000	806,000
Interest income	458,000	103,000
Income tax expense	431,000	963,000
Medical Equipment Leasing [Member]
Depreciation and amortization	4,429,000	4,268,000
Interest expense	1,087,000	806,000
Interest income	458,000	103,000
Income tax expense	306,000	753,000
Direct Patient Services [Member]
Depreciation and amortization	736,000	515,000
Interest expense	25,000	0
Interest income	0	0
Income tax expense	$ 125,000	$ 210,000