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Pension Benefits (Schedule Of Change In Plan Assets) (Details) - Defined Benefit Pension Plans [Member] - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets at beginning of year $ 36,713 $ 36,769
Actual return on plan assets 2,058 2,366
Employer contributions 162 20
Benefits paid (2,305) (2,442)
Fair value of plan assets at end of year $ 36,628 $ 36,713