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Debt (Details) - USD ($)
12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2020
Debt by current and non-current      
Long-term debt   $ 3,904,000  
Less: current maturities   (2,386,000)  
Long term debt, net of current portion   1,518,000  
Revolver Agreement      
Long-term debt disclosure:      
Line of credit, maximum borrowing capacity $ 11,000,000 $ 11,000,000  
Stock collateral (as a percent) 65%    
Revolver Agreement | LIBOR | Minimum [Member]      
Long-term debt disclosure:      
Basis spread 1.15%    
Revolver Agreement | LIBOR | Maximum [Member]      
Long-term debt disclosure:      
Basis spread 2.00%    
Revolver Agreement | Prime rate      
Long-term debt disclosure:      
Basis spread 0.25%    
Paycheck Protection Program      
Long-term debt disclosure:      
Interest rate   1.00%  
Loan forgiven $ 3,904,000    
Debt by current and non-current      
Long-term debt   $ 3,904,000 $ 3,904,000