Pension Benefits (Schedule Of Change In Benefit Obligation) (Details) - Pension Benefits [Member] - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	$ 44,152	$ 42,042
Interest cost	1,457	1,685	$ 1,612
Actuarial (gain) loss	(2,297)	2,683
Benefits paid	(2,371)	(2,258)
Benefit obligation at end of year	$ 40,941	$ 44,152	$ 42,042