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Pensions and Other Postretirement Benefits (Schedule of Pension Plans with an Accumulated Benefit Obligation in Excess of Plan Assets) (Details) - USD ($)
$ in Thousands
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
Pensions and Other Postretirement Benefits [Abstract]      
Projected benefit obligation $ 4,628 $ 5,567 $ 4,967
Accumulated benefit obligation 4,628 5,567  
Fair value of plan assets $ 1,432 $ 1,984 $ 2,052