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Accumulated Other Comprehensive Income Changes in Other Comprehensive Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Equity [Abstract] |  |  |  |
Unrealized gain on securities, before tax amount | $ (5,505) | $ 12,088 | $ 40,441 | $ 8,987
Unrealized gain on securities, tax effect | 1,925 | (4,231) | (14,156) | (3,146)
Unrealized gain on securities, net of tax amount | (3,580) | 7,857 | 26,285 | 5,841
Reclassification adjustment for securities gains included in net income, before tax amount | (2) | (1,730) | (1,025) | (8,290)
Reclassification adjustment for securities gains included in net income, tax effect | 1 | 606 | 359 | 2,902
Reclassification adjustment for securities gains included in net income, net of tax amount | (1) | (1,124) | (666) | (5,388)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax |  | 3,778 |  | 3,778
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax |  | (1,322) |  | (1,322)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax | 0 | (2,456) | 0 | (2,456)
Non-credit related unrealized gains on other-than-temporarily impaired debt securities, before tax amount |  |  |  | 192
Non-credit related unrealized gains on other-than-temporarily impaired debt securities, tax effect |  |  |  | (67)
Non-credit related unrealized gains on other-than-temporarily impaired debt securities, net of tax amount | 0 | 0 | 0 | 125
Amortization of unrealized loss on derivative financial instruments, before tax amount | 6 | 5 | 18 | 110
Amortization of unrealized loss on derivative financial instruments, tax effect | (2) | (2) | (6) | (39)
Amortization of unrealized loss on derivative financial instruments, net of tax amount | 4 | 3 | 12 | 71
Amortization of net unrecognized pension and postretirement items, before tax amount | 583 | 717 | 1,349 | 2,151
Amortization of net unrecognized pension and postretirement items, tax effect | (204) | (251) | (472) | (753)
Amortization of net unrecognized pension and postretirement items, net of tax amount | 379 | 466 | 877 | 1,398
Total Other Comprehensive Income, Before Tax Amount | (4,918) | 14,858 | 40,783 | 6,928
Total Other Comprehensive Income, Tax Effect | 1,720 | (5,200) | (14,275) | (2,425)
Other Comprehensive (Loss) Income | $ (3,198) | $ 9,658 | $ 26,508 | $ 4,503

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- Definition Amount before tax of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) related to pension and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580 + Details
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