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Benefit Plans 2 (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2012
Net periodic costs      
Reclassification of prior service cost into SD&A expense upon plan curtailment $ 0 $ 0 $ 3,117
Pension Benefits [Member]
      
Net periodic costs      
Service cost 77 78 289
Interest cost 1,180 1,260 2,047
Expected return on plan assets (416) (403) (396)
Recognized net actuarial loss (gain) 611 735 644
Amortization of prior service cost 78 83 412
Reclassification of prior service cost into SD&A expense upon plan curtailment 0 0 (3,117)
Net periodic cost 1,530 1,753 6,113
Retiree Health Care Benefits [Member]
      
Net periodic costs      
Service cost 48 80 30
Interest cost 139 188 237
Expected return on plan assets 0 0 0
Recognized net actuarial loss (gain) (38) (53) (72)
Amortization of prior service cost (271) 107 139
Reclassification of prior service cost into SD&A expense upon plan curtailment 0 0 0
Net periodic cost $ (122) $ 322 $ 334