Stock Options and Restricted Stock Awards (Maximum Performance Shares Granted) (Details) - Performance Shares - shares	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance Measurement (in shares)	278,889	336,826	313,018
Total Shareholder Return
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance Measurement (in shares)	278,889	336,826	156,509
Annual Revenue Growth
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance Measurement (in shares)			156,509