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Components of Other Comprehensive Income/(loss) (Schedule of Reclassification from AOCI) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Total reclassification from AOCI | $ 761 | $ 604 | $ 1,304 | $ 806
Securities AFS |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Realized (gains)/losses | (1) | 0 | (450) | (1,654)
Tax expense/(benefit) | 0 | 0 | 172 | 634
Total reclassification from AOCI | (1) | 0 | (278) | (1,020)
Cash Flow Hedges |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Realized (gains)/losses | (1,041) | (582) | (3,886) | (1,795)
Tax expense/(benefit) | 398 | 223 | 1,487 | 688
Total reclassification from AOCI | (643) | (359) | (2,399) | (1,107)
Pension and Postretirement Plans |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Realized (gains)/losses | 2,277 | 1,561 | 6,450 | 4,756
Tax expense/(benefit) | (872) | (598) | (2,469) | (1,823)
Total reclassification from AOCI | $ 1,405 | $ 963 | $ 3,981 | $ 2,933

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- Definition Amount before tax of reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669686-108580 + Details
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