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Accumulated Other Comprehensive Income (Changes in Other Comprehensive Income by Components) (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Net unrealized gains on securities available for sale |  |  |  |
Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Beginning balance | $ (12,274,000) | $ 3,850,000 | $ (2,638,000) | $ 2,209,000
Other Comprehensive Income Loss Before Reclassifications Net Of Tax | (3,178,000) | (3,618,000) | (12,754,000) | (1,911,000)
Reclassification Out Of Accumulated Other Comprehensive Income | (66,000) | 24,000 | (126,000) | (42,000)
Other Comprehensive Income (Loss) Other Net Of Tax | (3,244,000) | (3,594,000) | (12,880,000) | (1,953,000)
Ending balance | (15,518,000) | 256,000 | (15,518,000) | 256,000
Net unrealized loss on cash flow hedges |  |  |  |
Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Beginning balance | 89,000 | (502,000) | (311,000) | (613,000)
Other Comprehensive Income Loss Before Reclassifications Net Of Tax | (281,000) | (189,000) | (255,000) | (227,000)
Reclassification Out Of Accumulated Other Comprehensive Income | 448,000 | 128,000 | 822,000 | 277,000
Other Comprehensive Income (Loss) Other Net Of Tax | 167,000 | (61,000) | 567,000 | 50,000
Ending balance | 256,000 | (563,000) | 256,000 | (563,000)
Accumulated Other Comprehensive Income (Loss) [Member] |  |  |  |
Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Beginning balance | (12,185,000) | 3,348,000 | (2,949,000) | 1,596,000
Other Comprehensive Income Loss Before Reclassifications Net Of Tax | (3,459,000) | (3,807,000) | (13,009,000) | (2,138,000)
Reclassification Out Of Accumulated Other Comprehensive Income | 382,000 | 152,000 | 696,000 | 235,000
Other Comprehensive Income (Loss) Other Net Of Tax | (3,077,000) | (3,655,000) | (12,313,000) | (1,903,000)
Ending balance | $ (15,262,000) | $ (307,000) | $ (15,262,000) | $ (307,000)

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