XML 36 R77.htm IDEA: XBRL DOCUMENT v3.2.0.727
Pension and Other Postretirement Benefits - Components of Net Periodic Other Postretirement Benefit Cost (Details) - Other postretirement benefit plans [Member] - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
Net periodic other postretirement benefit costs      
Service cost $ 45 $ 55 $ 72
Interest cost 934 1,006 938
Amortization of prior service credit (59) (111) (111)
Recognition of actuarial loss 492 317 417
Curtailment Gain (221) 0 0
Net Periodic Benefit (Income) Cost $ 1,191 $ 1,267 $ 1,316