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Share-Based Compensation - Valuation Assumptions for Stock Options (Details) - Stock options
6 Months Ended
Dec. 31, 2020
Valuation Assumptions  
Risk-free interest rate, minimum 0.30%
Risk-free interest rate, maximum 0.50%
Expected dividend yield 0.00%
Expected life (in years) 4 years 9 months
Derived service period, minimum (in years) 1 year
Derived service period, maximum (in years) 2 years 7 months 6 days
Expected volatility, minimum 73.00%
Expected volatility, maximum 77.00%