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Accumulated Other Comprehensive Loss (Tables) | 3 Months Ended
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Mar. 31, 2019
Accumulated Other Comprehensive Loss. |
Schedule of changes in accumulated other comprehensive loss |
|  |  |  |  | Income |  |  |
|  |  |  |  | Tax |  |  |
|  | Pre-tax |  | Benefit |  | Net of
(dollars in thousands) |  | Amount |  | (Expense) |  | Tax
Accumulated other comprehensive loss at December 31, 2018 |  | $ | (180,915) |  | $ | 48,720 |  | $ | (132,195)
Three months ended March 31, 2019 |  |  |  |  |  |  |  |  |
Investment securities: |  |  |  |  |  |  |  |  |
Unrealized net gains arising during the period |  |  | 70,523 |  |  | (18,991) |  |  | 51,532
Reclassification of net losses to net income: |  |  |  |  |  |  |  |  |
Investment securities losses, net |  |  | 2,613 |  |  | (704) |  |  | 1,909
Net change in investment securities |  |  | 73,136 |  |  | (19,695) |  |  | 53,441
Other comprehensive income |  |  | 73,136 |  |  | (19,695) |  |  | 53,441
Accumulated other comprehensive loss at March 31, 2019 |  | $ | (107,779) |  | $ | 29,025 |  | $ | (78,754)
|  |  |  |  | Income |  |  |
|  |  |  |  | Tax |  |  |
|  | Pre-tax |  | Benefit |  | Net of
(dollars in thousands) |  | Amount |  | (Expense) |  | Tax
Accumulated other comprehensive loss at December 31, 2017 |  | $ | (159,423) |  | $ | 63,040 |  | $ | (96,383)
Three months ended March 31, 2018 |  |  |  |  |  |  |  |  |
Early adoption of ASU No. 2018-02 |  |  | — |  |  | (20,068) |  |  | (20,068)
Investment securities: |  |  |  |  |  |  |  |  |
Unrealized net losses arising during the period |  |  | (66,700) |  |  | 17,923 |  |  | (48,777)
Net change in investment securities |  |  | (66,700) |  |  | 17,923 |  |  | (48,777)
Cash flow derivative hedges: |  |  |  |  |  |  |  |  |
Unrealized net gains on cash flow derivative hedges arising during the period |  |  | 738 |  |  | (194) |  |  | 544
Net change in cash flow derivative hedges |  |  | 738 |  |  | (194) |  |  | 544
Other comprehensive loss |  |  | (65,962) |  |  | 17,729 |  |  | (48,233)
Accumulated other comprehensive loss at March 31, 2018 |  | $ | (225,385) |  | $ | 60,701 |  | $ | (164,684)
Summary of changes in accumulated other comprehensive loss, net of tax |
|  |  |  |  |  |  |  |  |  | Total
|  | Pensions |  |  |  |  |  | Accumulated
|  | and |  |  |  |  |  | Other
|  | Other |  | Investment |  | Cash Flow |  | Comprehensive
(dollars in thousands) |  | Benefits |  | Securities |  | Derivative Hedges |  | Loss
Three Months Ended March 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  | $ | (28,379) |  | $ | (103,816) |  | $ | — |  | $ | (132,195)
Other comprehensive income |  |  | — |  |  | 53,441 |  |  | — |  |  | 53,441
Balance at end of period |  | $ | (28,379) |  | $ | (50,375) |  | $ | — |  | $ | (78,754)
Three Months Ended March 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  | $ | (25,946) |  | $ | (74,117) |  | $ | 3,680 |  | $ | (96,383)
Early adoption of ASU No. 2018-02 |  |  | (5,393) |  |  | (15,440) |  |  | 765 |  |  | (20,068)
Other comprehensive (loss) income |  |  | — |  |  | (48,777) |  |  | 544 |  |  | (48,233)
Balance at end of period |  | $ | (31,339) |  | $ | (138,334) |  | $ | 4,989 |  | $ | (164,684)

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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e526-108580 + Details
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