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Reclassification Adjustments Out of Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Dec. 31, 2017
Reclassification Adjustments Out of Other Comprehensive Income [Abstract] |
Reclassification Out of Accumulated Other Comprehensive Income | The following table summarizes the reclassification adjustments out of AOCI:
Detail About AOCI Components |  | Amount Reclassified from AOCI |  | Affected Line Item in the Consolidated Statements of OCI
|  | Years ended |  |
(In thousands) |  | December 31, 2017 |  |  | December 31, 2016 |  |  | December 31, 2015 |  |
AFS securities: |  |  |  |  |  |  |  |  |  |
(Gains) losses on AFS securities |  | $ | (1,869 | ) |  | $ | 644 |  |  | $ | (3,087 | ) | Net securities (gains) losses
Amortization of unrealized gains related to securities transfer |  |  | 875 |  |  |  | 1,094 |  |  |  | 1,311 |  | Interest income
Impairment write-down of an equity security |  |  | 1,312 |  |  |  | - |  |  |  | - |  | Other noninterest income
Tax effect |  | $ | (120 | ) |  | $ | (677 | ) |  | $ | 691 |  | Income tax (expense) benefit
Net of tax |  | $ | 198 |  |  | $ | 1,061 |  |  | $ | (1,085 | ) |
Pension and other benefits: |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of net losses |  | $ | 1,755 |  |  | $ | 2,395 |  |  | $ | 2,437 |  | Salaries and employee benefits
Amortization of prior service costs |  |  | 97 |  |  |  | (25 | ) |  |  | (198 | ) | Salaries and employee benefits
Tax effect |  |  | (740 | ) |  |  | (949 | ) |  |  | (868 | ) | Income tax (expense) benefit
Net of tax |  | $ | 1,112 |  |  | $ | 1,421 |  |  | $ | 1,371 |  |
Total reclassifications, net of tax |  | $ | 1,310 |  |  | $ | 2,482 |  |  | $ | 286 |  |

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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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