Pension Benefits (Schedule Of Change In Benefit Obligation) (Details) - Defined Benefit Pension Plans [Member] - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	$ 36,892	$ 40,941
Interest cost	1,453	1,463	$ 1,457
Actuarial loss (gain)	2,342	(3,070)
Benefits paid	(2,305)	(2,442)
Benefit obligation at end of year	$ 38,382	$ 36,892	$ 40,941