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Accumulated Other Comprehensive Income (Reclassification Out Of Accumulated Other Comprehensive Income) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Sales $ (34,422) $ (29,162) $ (78,854) $ (69,779)
Income tax benefit (1,911) (1,728) (3,433) (3,493)
Amount reclassified net of tax     (397)  
Reclassification Out Of Accumulated Other Comprehensive Income [Member]
       
Sales (287)   (621)  
Income tax benefit (103)   (224)  
Amount reclassified net of tax $ (184)   $ (397)