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Equipment and Leasehold Improvements (Details) - USD ($)
12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 8,828,654 $ 9,530,327
Less: accumulated depreciation and amortization 7,740,637 8,249,147
Equipment and leasehold improvements, net 1,088,017 1,281,180
Machinery and Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 601,315 593,595
Machinery and Equipment [Member] | Minimum [Member]    
Property, Plant and Equipment [Line Items]    
Estimated useful lives (in years) 5 years  
Machinery and Equipment [Member] | Maximum [Member]    
Property, Plant and Equipment [Line Items]    
Estimated useful lives (in years) 10 years  
Furniture and Office Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 337,419 357,351
Furniture and Office Equipment [Member] | Minimum [Member]    
Property, Plant and Equipment [Line Items]    
Estimated useful lives (in years) 5 years  
Furniture and Office Equipment [Member] | Maximum [Member]    
Property, Plant and Equipment [Line Items]    
Estimated useful lives (in years) 10 years  
Tooling [Member]    
Property, Plant and Equipment [Line Items]    
Estimated useful lives (in years) 5 years  
Property, plant and equipment, gross $ 4,506,044 4,407,535
Computer & Technology Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 197,073 821,371
Computer & Technology Equipment [Member] | Minimum [Member]    
Property, Plant and Equipment [Line Items]    
Estimated useful lives (in years) 3 years  
Computer & Technology Equipment [Member] | Maximum [Member]    
Property, Plant and Equipment [Line Items]    
Estimated useful lives (in years) 5 years  
Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 2,951,054 3,074,421
Leasehold Improvements [Member] | Minimum [Member]    
Property, Plant and Equipment [Line Items]    
Estimated useful lives (in years) 3 years  
Leasehold Improvements [Member] | Maximum [Member]    
Property, Plant and Equipment [Line Items]    
Estimated useful lives (in years) 10 years  
Assets in Progress [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 235,749 $ 276,054