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International Retirement Plan (Components Of Net Periodic Benefit Costs And Other Amounts Recognized In Other Comprehensive Income) (Details) (International Retirement Plan [Member], USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
International Retirement Plan [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 43 $ 24 $ 88 $ 47
Interest cost 60 48 122 97
Total $ 103 $ 72 $ 210 $ 144