Share-based Compensation - Options Valuation (Details) - Stock options - $ / shares	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Assumptions used to estimate fair values
Risk-free interest rate (as a percent)		0.20%	1.90%
Expected volatility (as a percent)		82.50%	73.70%
Expected dividend yield (as a percent)	0.00%
Expected term (in years)		5 years	5 years 1 month 6 days
Weighted average fair value (in dollars per share)		$ 3.86	$ 4.00
Granted (in shares)	0