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Derivatives (Tables) | 12 Months Ended
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Dec. 31, 2017
Derivative [Line Items] |
Schedule Of Accumulated Other Comprehensive Income (Loss) | Accumulated other comprehensive loss included the following at December 31, 2017 and 2016:
| December 31, 2017 |  | December 31, 2016
(Dollars in thousands) | Accumulated other comprehensive loss |  | Deferred tax benefit |  | Accumulated other comprehensive loss, net of tax |  | Accumulated other comprehensive loss |  | Deferred tax benefit |  | Accumulated other comprehensive loss, net of tax
Unrealized losses on investment securities available for sale | $ | (48,834 | ) |  | $ | (17,889 | ) |  | $ | (30,945 | ) |  | $ | (72,707 | ) |  | $ | (26,832 | ) |  | $ | (45,875 | )
Funded status of defined benefit plan | (144,999 | ) |  | (53,650 | ) |  | (91,349 | ) |  | (141,774 | ) |  | (52,457 | ) |  | (89,317 | )
Total | $ | (193,833 | ) |  | $ | (71,539 | ) |  | $ | (122,294 | ) |  | $ | (214,481 | ) |  | $ | (79,289 | ) |  | $ | (135,192 | )
The following table highlights changes in accumulated other comprehensive (loss) income by component for the years ended December 31, 2017 and 2016:
(Dollars in thousands) | Unrealized (losses) gains on available-for-sale securities(1) |  | (Losses) gains on cash flow hedges(1) |  | Defined benefit pension items(1) |  | Total
Balance at January 1, 2016 | $ | (15,125 | ) |  | $ | (892 | ) |  | $ | (48,423 | ) |  | $ | (64,440 | )
Other comprehensive (loss) income before reclassifications | (13,946 | ) |  | 892 |  |  | (45,347 | ) |  | (58,401 | )
Amounts reclassified from accumulated other comprehensive loss | (16,804 | ) |  | — |  |  | 4,453 |  |  | (12,351 | )
Net current period other comprehensive (loss) income | (30,750 | ) |  | 892 |  |  | (40,894 | ) |  | (70,752 | )
Balance at December 31, 2016 | (45,875 | ) |  | — |  |  | (89,317 | ) |  | (135,192 | )
Other comprehensive income (loss) before reclassifications | 17,635 |  |  | — |  |  | (8,156 | ) |  | 9,479 |
Amounts reclassified from accumulated other comprehensive loss | (2,705 | ) |  | — |  |  | 6,124 |  |  | 3,419 |
Net current period other comprehensive income (loss) | 14,930 |  |  | — |  |  | (2,032 | ) |  | 12,898 |
Balance at December 31, 2017 | $ | (30,945 | ) |  | $ | — |  |  | $ | (91,349 | ) |  | $ | (122,294 | )
(1) All amounts are net of tax. Amounts in parentheses indicate debits.

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- Definition Tabular disclosure of the components of accumulated 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=84228862&loc=SL7669686-108580 + Details
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