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Goodwill And Related Intangible Assets (Schedule Of Amortization Expense) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Goodwill And Related Intangible Assets [Abstract]  
2013 $ 4,756
2014 5,497
2015 5,361
2016 5,026
2017 3,193
2018 $ 2,614