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Comprehensive Income/Loss (Comprehensive Income/(Loss) Presented Net of Taxes) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
COMPREHENSIVE INCOME |  |  |  |
Change in fair value of securities available for sale, pre tax amount | $ 3,016 | $ (3,910) | $ 9,666 | $ (1,369)
Change in fair value of securities available for sale, tax (expense) benefit | (1,161) | 1,496 | (3,747) | 516
Change in fair value of securities available for sale, after tax amount | 1,855 | (2,414) | 5,919 | (853)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale and Write-down of Securities, before Tax | 2 | (315) | (27) | (315)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale and Write-down of Securities, Tax | (1) | 129 | 11 | 129
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale and Write-down of Securities, Net of Tax | 1 | (186) | (16) | (186)
Change in fair value of securities available for sale, pre tax amount | 3,014 | (3,595) | 9,693 | (1,054)
Change in fair value of securities available for sale, tax (expense) benefit | (1,160) | 1,367 | (3,758) | 387
Change in fair value of securities available for sale, after tax amount | 1,854 | (2,228) | 5,935 | (667)
Change in fair value of cash flow hedges, pre tax amount | (882) | (36) | (1,338) | (603)
Change in fair value of cash flow hedges, tax (expense) benefit | 360 | (3) | 548 | 228
Change in fair value of cash flow hedges, after tax amount | (522) | (39) | (790) | (375)
Less: net cash flow hedge losses reclassified into interest on borrowings expense, pre tax amount | (640) | (709) | (1,301) | (1,415)
Less: net cash flow hedge losses reclassified into earnings, tax (expense) benefit | 262 | 288 | 532 | 576
Less: net cash flow hedge losses reclassified into interest on borrowings expense, after tax | (378) | (421) | (769) | (839)
Net change in fair value of cash flow hedges, pre tax amount | (242) | 673 | (37) | 812
Net change in fair value of cash flow hedges, tax (expense) benefit | 98 | (291) | 16 | (348)
Net change in fair value of cash flow hedges | (144) | 382 | (21) | 464
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, before Tax | (28) | 43 | (56) | 87
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax | 11 | (32) | 22 | (50)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax | (17) | 11 | (34) | 37
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), before Tax | (61) | (60) | (122) | (121)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Tax | 25 | 24 | 50 | 49
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Net of Tax | (36) | (36) | (72) | (72)
Amortization of certain costs included in net periodic retirement costs, pre tax amount | (69) | (128) | (138) | (152)
Amortization of certain costs included in net periodic retirement costs, tax (expense) benefit | 27 | 52 | 55 | 62
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), Net of Tax | 42 | 76 | 83 | 90
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax | 102 | 231 | 204 | 360
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax | (41) | (108) | (83) | (161)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax | 61 | 123 | 121 | 199
Total other comprehensive income, pre tax amount | 2,874 | (2,691) | 9,860 | 118
Total other comprehensive income, tax (expense) benefit | (1,103) | 968 | (3,825) | (122)
Total other comprehensive income, after tax amount | $ 1,771 | $ (1,723) | $ 6,035 | $ (4)

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