Pension Benefits (Schedule Of Change In Plan Assets) (Details) - Defined Benefit Pension Plans [Member] - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at beginning of year	$ 36,768	$ 36,628
Actual return on plan assets	4,931	2,344
Employer contributions	27	94
Benefits paid	(2,307)	(2,298)
Fair value of plan assets at end of year	$ 39,419	$ 36,768