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Statements of Operations - Amortization of intangible assets (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Jun. 30, 2020
Statements of Operations-Additional Information    
2022 $ 8,628  
2023 8,607  
2024 8,427  
2025 6,773  
2026 5,823  
Thereafter 24,024  
Total $ 62,282 $ 70,997