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Pension Plans And Other Post Retirement Benefits (Schedule Of CDT Defined Benefit Plan And CDT Long-Term Employee Benefit Obligation) (Details) (USD $)
In Thousands
Jun. 30, 2011
Jun. 30, 2010
Noncurrent portion of benefit obligation $ 18,478 $ 15,888
CDT Defined Benefit Plan [Member]
   
Total benefit obligation 18,231 15,507
Current portion of benefit obligation 489 [1] 405 [1]
Noncurrent portion of benefit obligation 17,742 15,102
CDT Anniversary Plan [Member]
   
Total benefit obligation 550 524
Current portion of benefit obligation 57 [1] 89 [1]
Noncurrent portion of benefit obligation 493 435
CDT Early Retirement Plan [Member]
   
Total benefit obligation 234 351
Noncurrent portion of benefit obligation 234 351
CDT Pension Plan [Member]
   
Total benefit obligation 19,015 16,382
Current portion of benefit obligation 546 [1] 494 [1]
Noncurrent portion of benefit obligation $ 18,469 $ 15,888
[1] The current portion of the benefit obligation has been included within Accounts payable and accrued liabilities within the Consolidated Balance Sheets.