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Benefit Plans Benefit Plans - Narrative (Details) - Pension Plan [Member] - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2017
Mar. 31, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Special Termination Benefits Charge $ 0 $ 0 $ 0 $ 214
Settlement gain $ 320   $ 320