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5. Supplemental Financial Information (Details - Amortization expense)
$ in Thousands
Jun. 30, 2020
USD ($)
Supplemental Financial Information Details Amortization Expense Abstract  
2021 $ 3,094
2022 2,240
2023 2,240
2024 2,240
2025 1,784
Thereafter 851
Total amortization expense $ 12,449