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Components of Other Comprehensive Income (Loss) | 9 Months Ended
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Sep. 30, 2020
Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Components of Other Comprehensive Income (Loss) | Components of Other Comprehensive Income (Loss) The following table provides the changes in accumulated other comprehensive income (loss) by component, net of tax, for the three and nine months ended September 30, 2020 and 2019:
(Dollars in thousands) |  | Securities AFS |  | Cash Flow Hedges |  | Pension and Post-retirement Plans |  | Total
Balance as of July 1, 2020 |  | $ | 118,327 |  |  | $ | 16,305 |  |  | $ | (269,430) |  |  | $ | (134,798) |
Net unrealized gains (losses) |  | (6,121) |  |  | (805) |  |  | (141) |  |  | (7,067) |
Amounts reclassified from AOCI |  | 1,003 |  |  | (2,128) |  |  | 2,520 |  |  | 1,395 |
Other comprehensive income (loss) |  | (5,118) |  |  | (2,933) |  |  | 2,379 |  |  | (5,672) |
Balance as of September 30, 2020 |  | $ | 113,209 |  |  | $ | 13,372 |  |  | $ | (267,051) |  |  | $ | (140,470) |
Balance as of January 1, 2020 |  | $ | 31,079 |  |  | $ | 3,227 |  |  | $ | (273,914) |  |  | $ | (239,608) |
Net unrealized gains (losses) |  | 81,127 |  |  | 13,998 |  |  | (163) |  |  | 94,962 |
Amounts reclassified from AOCI |  | 1,003 |  |  | (3,853) |  |  | 7,026 |  |  | 4,176 |
Other comprehensive income (loss) |  | 82,130 |  |  | 10,145 |  |  | 6,863 |  |  | 99,138 |
Balance as of September 30, 2020 |  | $ | 113,209 |  |  | $ | 13,372 |  |  | $ | (267,051) |  |  | $ | (140,470) |
(Dollars in thousands) |  | Securities AFS |  | Cash Flow Hedges |  | Pension and Post-retirement Plans |  | Total
Balance as of July 1, 2019 |  | $ | 21,071 |  |  | $ | 2,184 |  |  | $ | (285,744) |  |  | $ | (262,489) |
Net unrealized gains (losses) |  | 16,889 |  |  | 1,855 |  |  | — |  |  | 18,744 |
Amounts reclassified from AOCI |  | — |  |  | 989 |  |  | 2,102 |  |  | 3,091 |
Other comprehensive income (loss) |  | 16,889 |  |  | 2,844 |  |  | 2,102 |  |  | 21,835 |
Balance as of September 30, 2019 |  | $ | 37,960 |  |  | $ | 5,028 |  |  | $ | (283,642) |  |  | $ | (240,654) |
Balance as of January 1, 2019 |  | $ | (75,736) |  |  | $ | (12,112) |  |  | $ | (288,768) |  |  | $ | (376,616) |
Net unrealized gains (losses) |  | 113,495 |  |  | 13,367 |  |  | — |  |  | 126,862 |
Amounts reclassified from AOCI |  | 201 |  |  | 3,773 |  |  | 5,126 |  |  | 9,100 |
Other comprehensive income (loss) |  | 113,696 |  |  | 17,140 |  |  | 5,126 |  |  | 135,962 |
Balance as of September 30, 2019 |  | $ | 37,960 |  |  | $ | 5,028 |  |  | $ | (283,642) |  |  | $ | (240,654) |
Reclassifications from AOCI, and related tax effects, were as follows:
(Dollars in thousands) |  | Three Months Ended September 30, |  | Nine Months Ended September 30, |  |
Details about AOCI |  | 2020 |  | 2019 |  | 2020 |  | 2019 |  | Affected line item in the statement where net income is presented
Securities AFS: |  |  |  |  |  |  |  |  |  |
Realized (gains) losses on securities AFS |  | $ | 1,323 |  |  | $ | — |  |  | $ | 1,323 |  |  | $ | 267 |  |  | Securities gains (losses), net
Tax expense (benefit) |  | (320) |  |  | — |  |  | (320) |  |  | (66) |  |  | Provision (benefit) for income taxes
|  | 1,003 |  |  | — |  |  | 1,003 |  |  | 201 |  |  |
Cash flow hedges: |  |  |  |  |  |  |  |  |  |
Realized (gains) losses on cash flow hedges |  | (2,807) |  |  | 1,313 |  |  | (5,084) |  |  | 5,012 |  |  | Interest and fees on loans and leases
Tax expense (benefit) |  | 679 |  |  | (324) |  |  | 1,231 |  |  | (1,239) |  |  | Provision (benefit) for income taxes
|  | (2,128) |  |  | 989 |  |  | (3,853) |  |  | 3,773 |  |  |
Pension and Postretirement Plans: |  |  |  |  |  |  |  |  |  |
Amortization of prior service cost and net actuarial gain (loss) |  | 3,325 |  |  | 2,792 |  |  | 9,270 |  |  | 6,809 |  |  | All other expense
Tax expense (benefit) |  | (805) |  |  | (690) |  |  | (2,244) |  |  | (1,683) |  |  | Provision (benefit) for income taxes
|  | 2,520 |  |  | 2,102 |  |  | 7,026 |  |  | 5,126 |  |  |
Total reclassification from AOCI |  | $ | 1,395 |  |  | $ | 3,091 |  |  | $ | 4,176 |  |  | $ | 9,100 |  |  |

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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