Share-based Compensation - Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Share-based compensation costs
Share based compensation	$ 10,216	$ 9,027	$ 9,896
Tax benefit at statutory rate	2,299	2,031	2,919
Selling, general and administrative
Share-based compensation costs
Share based compensation	7,087	5,715	7,570
Research and development
Share-based compensation costs
Share based compensation	801	750	680
Cost of sales
Share-based compensation costs
Share based compensation	$ 2,328	$ 2,562	$ 1,646