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Accumulated Other Comprehensive Income (Changes in Other Comprehensive Income by Components) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Net unrealized gains on securities available for sale |  |
Accumulated Other Comprehensive Income [Line Items] |  |
Beginning balance | $ 16,924 | $ 25,764
Other Comprehensive Income Loss Before Reclassifications Net Of Tax | (4,326) | 4,311
Reclassification Out Of Accumulated Other Comprehensive Income | 2,491 | 139
Other Comprehensive Income (Loss) Other Net Of Tax | (1,835) | 4,450
Ending balance | 15,089 | 30,214
Net unrealized loss on cash flow hedges |  |
Accumulated Other Comprehensive Income [Line Items] |  |
Beginning balance | (2,927) | (6,053)
Other Comprehensive Income Loss Before Reclassifications Net Of Tax | (1,457) | (1,369)
Reclassification Out Of Accumulated Other Comprehensive Income | 1,579 | 1,532
Other Comprehensive Income (Loss) Other Net Of Tax | 122 | 163
Ending balance | (2,805) | (5,890)
Accumulated Other Comprehensive Income (Loss) [Member] |  |
Accumulated Other Comprehensive Income [Line Items] |  |
Beginning balance | 13,997 | 19,711
Other Comprehensive Income Loss Before Reclassifications Net Of Tax | (5,783) | 2,942
Reclassification Out Of Accumulated Other Comprehensive Income | 4,070 | 1,671
Other Comprehensive Income (Loss) Other Net Of Tax | (1,713) | 4,613
Ending balance | $ 12,284 | $ 24,324

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