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Accumulated Other Comprehensive Income (Accumulated Comprehensive Income, net of income tax) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Accumulated Other Comprehensive Income [Line Items] |  |  |
Unrealized loss on securities available-for-sale which are other-than-temporarily impaired | $ (3,172) | $ 0 | $ 0
Accumulated other comprehensive income, net of tax, Total | 13,997 | 19,711 |
Accumulated Other Comprehensive Income (Loss) [Member] |  |  |
Accumulated Other Comprehensive Income [Line Items] |  |  |
Accumulated other comprehensive income, net of tax, Total | 13,997 | 19,711 |
AccumulatedOtherThanTemporaryImpairmentMember |  |  |
Accumulated Other Comprehensive Income [Line Items] |  |  |
Unrealized gain on securities available-for-sale which are not other-than-temporarily impaired | 22,044 | 28,743 |
Unrealized loss on securities available-for-sale which are other-than-temporarily impaired | (3,196) |  |
Income tax effect of unrealized gain on securities available-for-sale | 1,924 | 2,978 |
Net unrealized gain on securities available for sale wich are not other than temporarily impaired | 16,924 | 25,765 |
Accumulated Net Gain Loss From Designated Or Qualifying Cash Flow Hedges [Member] |  |  |
Accumulated Other Comprehensive Income [Line Items] |  |  |
Unrealized loss on cash flow hedges | (4,307) | (8,585) |
Income tax effect of unrealized loss on cash flow hedges | 1,380 | 2,531 |
Net unrealized (loss) income on cash flow hedges | $ (2,927) | $ (6,054) |

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