Pension Benefits (Schedule Of Change In Benefit Obligation) (Details) - Defined Benefit Pension Plans [Member] - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	$ 40,941	$ 44,152
Interest cost	1,463	1,457	$ 1,685
Actuarial gain	(3,070)	(2,297)
Benefits paid	(2,442)	(2,371)
Benefit obligation at end of year	$ 36,892	$ 40,941	$ 44,152