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Goodwill And Other Intangible Assets (Changes In The Accumulated Amortization And Net Book Value) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Goodwill And Other Intangible Assets [Abstract]          
Gross carrying amount $ 12,610   $ 12,610   $ 8,682
Accumulated amortization (2,775)   (2,775)   (2,138)
Net carrying value at end of period 9,835   9,835   $ 6,544
Amortization during the year $ 315 $ 238 $ 637 $ 481