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Supplemental Financial Information (Details - Amortization expense) - USD ($)
$ in Thousands
Jun. 30, 2021
Jun. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
2022 $ 2,240  
2023 2,240  
2024 2,240  
2025 1,785  
2026 850  
 Total amortization expense $ 9,355 $ 12,449