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Pension Benefits (Amounts Recognized In Accumulated Other Comprehensive Loss) (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2015
Defined Benefit Plan Disclosure [Line Items]      
Total $ 8,936 $ 11,350 $ 10,057
Pension Benefits [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Net actuarial loss 16,380 20,434  
Income taxes (6,052) (7,550)  
Total $ 10,328 $ 12,884