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Pension Plans And Other Post Retirement Benefits (Schedule Of The Change In The Benefit Obligation Of CDT Defined Benefit Plan) (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended 12 Months Ended
Dec. 31, 2012
Jun. 30, 2012
Compensation and Retirement Disclosure [Abstract]    
Benefit obligation-beginning of period $ 21,461 $ 18,231
Service cost 230 326
Interest cost 446 873
Benefits paid (229) (441)
Actuarial (gain) loss 876 5,179
Foreign exchange (gain) loss 1,662 (2,707)
Benefit obligation-end of period 24,446 21,461
Less: current portion (524) (475)
Noncurrent portion of benefit obligation $ 23,922 $ 20,986