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Severance, Impairment And Other Charges (Schedule Of Restructuring Reserve Reconciliation) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Severance And Other Charges [Abstract]    
Beginning Balance $ 148 $ 44
Payments (89) (44)
Ending Balance $ 59 $ 0