v3.26.1
Note 4 - Property and Equipment - Schedule of Property and Equipment (Details) - USD ($)
Jun. 30, 2026
Jun. 30, 2025
Property, Plant and Equipment, Gross $ 10,812,000 $ 10,718,000
Property, Plant and Equipment, Accumulated Depreciation (5,598,000) (6,004,000)
Net property and equipment 5,214,000 4,714,000
Building and Building Improvements [Member]    
Property, Plant and Equipment, Gross $ 4,083,000 3,457,000
Building and Building Improvements [Member] | Minimum [Member]    
Property, Plant and Equipment, Useful Life (Year) 10 years  
Building and Building Improvements [Member] | Maximum [Member]    
Property, Plant and Equipment, Useful Life (Year) 40 years  
Land [Member]    
Property, Plant and Equipment, Gross $ 200,000 200,000
Land Improvements [Member]    
Property, Plant and Equipment, Useful Life (Year) 15 years  
Property, Plant and Equipment, Gross $ 173,000 173,000
Equipment [Member]    
Property, Plant and Equipment, Gross $ 3,178,000 3,214,000
Equipment [Member] | Minimum [Member]    
Property, Plant and Equipment, Useful Life (Year) 3 years  
Equipment [Member] | Maximum [Member]    
Property, Plant and Equipment, Useful Life (Year) 7 years  
Software [Member]    
Property, Plant and Equipment, Useful Life (Year) 7 years  
Property, Plant and Equipment, Gross $ 2,134,000 2,236,000
Demonstration and Rental Equipment [Member]    
Property, Plant and Equipment, Useful Life (Year) 3 years  
Property, Plant and Equipment, Gross $ 859,000 1,214,000
Construction in Progress [Member]    
Property, Plant and Equipment, Gross $ 185,000 $ 224,000