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Short-term and Long-term Debt - Maturities of Short-term and Long-term Debt (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Jun. 30, 2019
Debt Disclosure [Abstract]    
2021 $ 23,704  
2022 0  
2023 68  
2024 814  
2025 814  
2026 and thereafter 4,001  
Total debt $ 29,401 $ 23,647