Share-based Compensation - Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Share-based compensation costs
Share based compensation	$ 9,027	$ 9,896	$ 7,719
Tax benefit at statutory rate	2,031	2,919	2,818
Selling, general and administrative
Share-based compensation costs
Share based compensation	5,715	7,570	5,855
Research and development
Share-based compensation costs
Share based compensation	750	680	661
Cost of sales
Share-based compensation costs
Share based compensation	$ 2,562	$ 1,646	$ 1,203