Pension Benefits (Schedule Of Change In Benefit Obligation) (Details) - Defined Benefit Pension Plans [Member] - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	$ 39,969	$ 38,382
Interest cost	965	1,246	$ 1,453
Actuarial (gain) loss	(1,188)	2,639
Benefits paid	(2,307)	(2,298)
Benefit obligation at end of year	$ 37,439	$ 39,969	$ 38,382