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BUSINESS ACTIVITY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fair vale on a recurring basis (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Jun. 30, 2022
Fair value, assets and liabilities measured on recurring basis    
Subtotal $ 4,740 $ 4,688
Less Long-term (319) (325)
Net Current 4,421 4,363
Equity Securities    
Fair value, assets and liabilities measured on recurring basis    
Subtotal 843 764
State and Municipal Debt Securities    
Fair value, assets and liabilities measured on recurring basis    
Subtotal 880 889
Fixed Income Funds    
Fair value, assets and liabilities measured on recurring basis    
Subtotal 2,715 2,687
Alternative Funds    
Fair value, assets and liabilities measured on recurring basis    
Subtotal 256 300
Real Estate Funds    
Fair value, assets and liabilities measured on recurring basis    
Subtotal 46 48
Level 1 | Equity Securities    
Fair value, assets and liabilities measured on recurring basis    
Subtotal 843 764
Level 1 | State and Municipal Debt Securities    
Fair value, assets and liabilities measured on recurring basis    
Subtotal 880 889
Level 1 | Fixed Income Funds    
Fair value, assets and liabilities measured on recurring basis    
Subtotal 2,715 2,687
Level 2 | Alternative Funds    
Fair value, assets and liabilities measured on recurring basis    
Subtotal 256 300
Level 2 | Real Estate Funds    
Fair value, assets and liabilities measured on recurring basis    
Subtotal $ 46 $ 48