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Pension Plans And Other Post Retirement Benefits (Components Of Net Pension Expense For CDT Pension Plan) (Details) (USD $)
In Thousands
12 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2009
Service cost $ 350 $ 403  
Interest cost 868 862  
Net pension expense 552 211 1,377
CDT Pension Plan [Member]
     
Service cost 350 403  
Interest cost 868 862  
Curtailment gain   (403)  
Net pension expense $ 1,218 $ 862