v2.4.0.6
Accumulated Other Comprehensive Income (Schedule Of Components Of Accumulated Other Comprehensive (Loss) Income) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Component of Other Income, Nonoperating [Line Items]    
Accumulated other comprehensive (loss) income, net of tax, Opening balance $ (3,350)  
Accumulated other comprehensive (loss) income, net of tax, Current period change 1,953 2,622
Accumulated other comprehensive (loss) income, net of tax, Closing balance (1,397)  
Foreign Currency Translation Adjustment [Member]
    
Component of Other Income, Nonoperating [Line Items]    
Accumulated other comprehensive (loss) income, net of tax, Opening balance (2,446)  
Accumulated other comprehensive (loss) income, net of tax, Current period change 1,935  
Accumulated other comprehensive (loss) income, net of tax, Closing balance (511)  
Minimum Pension Liability Adjustment [Member]
    
Component of Other Income, Nonoperating [Line Items]    
Accumulated other comprehensive (loss) income, net of tax, Opening balance 71  
Accumulated other comprehensive (loss) income, net of tax, Current period change 2  
Accumulated other comprehensive (loss) income, net of tax, Closing balance 73  
Unamortized Post-Retirement Health Care Costs [Member]
    
Component of Other Income, Nonoperating [Line Items]    
Accumulated other comprehensive (loss) income, net of tax, Opening balance (975)  
Accumulated other comprehensive (loss) income, net of tax, Current period change 16  
Accumulated other comprehensive (loss) income, net of tax, Closing balance (959)  
Accumulated Other Comprehensive (Loss) Income [Member]
    
Component of Other Income, Nonoperating [Line Items]    
Accumulated other comprehensive (loss) income, net of tax, Opening balance (3,350)  
Accumulated other comprehensive (loss) income, net of tax, Current period change 1,953  
Accumulated other comprehensive (loss) income, net of tax, Closing balance $ (1,397)