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Note 1 - Basis of Presentation - Allocations to Reportable Segments (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Depreciation and amortization $ 1,454,000 $ 1,644,000 $ 4,411,000 $ 4,501,000
Interest expense 392,000 336,000 1,253,000 1,070,000
Interest income 34,000 63,000 157,000 252,000
Income tax expense 48,000 (169,000) (296,000) (244,000)
Medical Equipment Leasing [Member]        
Interest expense 370,000 304,000 1,173,000 972,000
Income tax expense (31,000) (276,000) (195,000) (415,000)
Direct Patient Services [Member]        
Interest expense 22,000 32,000 80,000 98,000
Income tax expense 79,000 107,000 (101,000) 171,000
Medical Equipment Leasing [Member]        
Depreciation and amortization 876,000 1,101,000 2,735,000 3,412,000
Interest income 18,000 57,000 114,000 246,000
Direct Patient Services [Member]        
Depreciation and amortization 578,000 543,000 1,676,000 1,089,000
Interest income $ 16,000 $ 6,000 $ 43,000 $ 6,000