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Note 7 - Intangible Assets - Amortizable - Estimated Future Amortization Expense (Details) - USD ($)
Dec. 31, 2020
Jun. 30, 2020
2021 $ 3,157,000  
2022 6,085,000  
2023 6,045,000  
2024 6,033,000  
2025 4,480,000  
Thereafter 19,899,000  
Finite-Lived Intangible Assets, Net, Ending Balance $ 45,699,000 $ 48,855,000