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Pension Plans And Other Post Retirement Benefits (Components Of Net Pension Expense For CDT Pension Plan) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Jun. 30, 2013
Defined Benefit Plan Disclosure [Line Items]      
Service cost $ 113   $ 457
Interest cost 217   888
Net pension expense 230 242  
CDT Pension Plan [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Service cost 113 113  
Interest cost 217 220  
Amortization of actuarial gains and losses 69 68  
Net pension expense $ 399 $ 401