Share - Based Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Compensation costs charged to expense under award programs
Total compensation costs under award programs	$ 5,520	$ 4,067	$ 4,461
Stock Options and Stock Appreciation Rights [ Member]
Compensation costs charged to expense under award programs
Total compensation costs under award programs	1,891	1,543	1,610
Performance Shares [Member]
Compensation costs charged to expense under award programs
Total compensation costs under award programs	1,331	446	836
Restricted stock and Restricted Stock units [Member]
Compensation costs charged to expense under award programs
Total compensation costs under award programs	$ 2,298	$ 2,078	$ 2,015