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PROPERTY AND EQUIPMENT - Property and equipment (Details) - USD ($)
Jun. 30, 2024
Jun. 30, 2023
Property, Plant and Equipment [Line Items]    
Property plant and equipment, gross $ 62,507,377 $ 61,717,416
Less: Accumulated depreciation and amortization 43,798,457 39,571,043
Property plant and equipment, net 18,708,920 22,146,373
Diagnostic Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property plant and equipment, gross 33,243,694 33,144,266
Research, development and demonstration equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property plant and equipment, gross 6,199,941 6,199,941
Machinery and Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property plant and equipment, gross 2,069,055 2,069,055
Furniture and Fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Property plant and equipment, gross 3,742,169 3,714,499
Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property plant and equipment, gross 16,312,904 15,650,041
Building [Member]    
Property, Plant and Equipment [Line Items]    
Property plant and equipment, gross $ 939,614 $ 939,614