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Benefit Plans 2 (Details) - Pension Benefits [Member] - USD ($)
$ in Thousands
Jun. 30, 2018
Jun. 30, 2017
Information for pension plans with projected benefit obligations and accumulated benefit obligations in excess of plan assets    
Projected benefit obligations $ 21,534 $ 24,411
Accumulated benefit obligations 21,534 24,411
Fair value of plan assets $ 7,702 $ 6,530