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Commitments and Contingencies - Schedule of Future Minimum Long-term Principal and Interest on Convertible Notes (Details) (Parenthetical) (Details)
Jun. 30, 2020
Jun. 30, 2019
Aug. 31, 2017
3.75% Convertible Senior Notes due 2022      
Debt      
Interest rate (as a percent) 3.75% 3.75% 3.75%