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Note 1 - Basis of Presentation - Allocations to Reportable Segments (Details) - USD ($)
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Depreciation and amortization $ 1,449,000 $ 1,334,000
Interest expense 433,000 349,000
Interest income 74,000 111,000
Income tax expense (323,000) (44,000)
Medical Equipment Leasing [Member]    
Depreciation and amortization 899,000 1,092,000
Interest expense 398,000 316,000
Interest income 58,000 111,000
Income tax expense (257,000) 42,000
Direct Patient Services [Member]    
Depreciation and amortization 550,000 242,000
Interest expense 35,000 33,000
Interest income 16,000 0
Income tax expense $ (66,000) $ (86,000)