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INTANGIBLE ASSETS - Estimated amortization expense related to intangible assets subject to amortization (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Jun. 30, 2021
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]    
2022 $ 72  
2023 96  
2024 96  
2025 96  
2026 96  
Thereafter 455  
Net Book Value $ 911 $ 935