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Comprehensive Income (Tables) | 6 Months Ended
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Jun. 30, 2018
Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Schedule of Comprehensive Income | The following table presents the components of other comprehensive income for the three- and six-month periods ended June 30, 2018 and 2017:
Schedule of Comprehensive Income
| Three Months Ended June 30, |  | Six Months Ended June 30,
|  |  | Tax |  |  |  |  |  | Tax |  |
| Before-Tax |  | (Expense) |  | Net-of-Tax |  | Before-Tax |  | (Expense) |  | Net-of-Tax
| Amount |  | Benefit |  | Amount |  | Amount |  | Benefit |  | Amount
2018 |  |  |  |  |  |  |  |  |  |  |
Net Unrealized Securities Holding Losses on Securities Available-for-Sale Arising During the Period | (853 | ) |  | $ | 218 |  |  | (635 | ) |  | (4,185 | ) |  | $ | 1,065 |  |  | (3,120 | )
Amortization of Net Retirement Plan Actuarial Loss | 103 |  |  | (28 | ) |  | 75 |  |  | 163 |  |  | (42 | ) |  | 121 |
Accretion of Net Retirement Plan Prior Service Credit | 55 |  |  | (14 | ) |  | 41 |  |  | 54 |  |  | (14 | ) |  | 40 |
Other Comprehensive Loss | $ | (695 | ) |  | $ | 176 |  |  | $ | (519 | ) |  | $ | (3,968 | ) |  | $ | 1,009 |  |  | $ | (2,959 | )
2017 |  |  |  |  |  |  |  |  |  |  |
Net Unrealized Securities Holding Gains on Securities Available-for-Sale Arising During the Period | 666 |  |  | $ | (257 | ) |  | 409 |  |  | 743 |  |  | $ | (287 | ) |  | 456 |
Amortization of Net Retirement Plan Actuarial Loss | 181 |  |  | (109 | ) |  | 72 |  |  | 359 |  |  | (178 | ) |  | 181 |
Accretion of Net Retirement Plan Prior Service Credit | (3 | ) |  | 2 |  |  | (1 | ) |  | (6 | ) |  | 3 |  |  | (3 | )
Other Comprehensive Income | $ | 844 |  |  | $ | (364 | ) |  | $ | 480 |  |  | $ | 1,096 |  |  | $ | (462 | ) |  | $ | 634 |
Changes in Accumulated Other Comprehensive Income By Component | The following table presents the changes in accumulated other comprehensive income by component:
Changes in Accumulated Other Comprehensive Income (Loss) by Component (1)
| Unrealized |  | Defined Benefit Plan Items |  |
| Gains and |  |  |  |  |  |
| Losses on |  |  |  | Net Prior |  |
| Available-for- |  | Net Gain |  | Service |  |
| Sale Securities |  | (Loss) |  | (Cost ) Credit |  | Total
For the Quarter-To-Date periods ended: |  |  |  |  |  |  |
March 31, 2018 | $ | (4,066 | ) |  | $ | (6,334 | ) |  | $ | (885 | ) |  | $ | (11,285 | )
Other comprehensive income or loss before reclassifications | (635 | ) |  | — |  |  | — |  |  | (635 | )
Amounts reclassified from accumulated other comprehensive income |  |  | 75 |  |  | 41 |  |  | 116 |
Net current-period other comprehensive income (loss) | (635 | ) |  | 75 |  |  | 41 |  |  | (519 | )
June 30, 2018 | $ | (4,701 | ) |  | $ | (6,259 | ) |  | $ | (844 | ) |  | $ | (11,804 | )
March 31, 2017 | $ | (335 | ) |  | $ | (5,628 | ) |  | $ | (717 | ) |  | $ | (6,680 | )
Other comprehensive income or loss before reclassifications | 409 |  |  | — |  |  | — |  |  | 409 |
Amounts reclassified from accumulated other comprehensive income | — |  |  | 72 |  |  | (1 | ) |  | 71 |
Net current-period other comprehensive income (loss) | 409 |  |  | 72 |  |  | (1 | ) |  | 480 |
June 30, 2017 | $ | 74 |  |  | $ | (5,556 | ) |  | $ | (718 | ) |  | $ | (6,200 | )
For the Year-To-Date periods ended: |  |  |  |  |  |  |
December 31, 2017 | $ | (1,250 | ) |  | $ | (6,380 | ) |  | $ | (884 | ) |  | $ | (8,514 | )
Other comprehensive income or loss before reclassifications | (3,120 | ) |  | — |  |  | — |  |  | (3,120 | )
Amounts reclassified from accumulated other comprehensive income | — |  |  | 121 |  |  | 40 |  |  | 161 |
Net current-period other comprehensive income | (3,120 | ) |  | 121 |  |  | 40 |  |  | (2,959 | )
Amounts reclassified from accumulated other comprehensive income | $ | (331 | ) |  |  |  |  |  | $ | (331 | )
June 30, 2018 | $ | (4,701 | ) |  | $ | (6,259 | ) |  | $ | (844 | ) |  | $ | (11,804 | )
December 31, 2016 | $ | (382 | ) |  | $ | (5,737 | ) |  | $ | (715 | ) |  | $ | (6,834 | )
Other comprehensive income or loss before reclassifications | 456 |  |  | — |  |  | — |  |  | 456 |
Amounts reclassified from accumulated other comprehensive income | — |  |  | 181 |  |  | (3 | ) |  | 178 |
Net current-period other comprehensive income | 456 |  |  | 181 |  |  | (3 | ) |  | 634 |
June 30, 2017 | $ | 74 |  |  | $ | (5,556 | ) |  | $ | (718 | ) |  | $ | (6,200 | )
(1) All amounts are net of tax.
Reclassification out of Accumulated Other Comprehensive Income | The following table presents the reclassifications out of accumulated other comprehensive income:
Reclassifications Out of Accumulated Other Comprehensive Income
|  | Amounts Reclassified |  |
Details about Accumulated Other |  | from Accumulated Other |  | Affected Line Item in the Statement
Comprehensive Income (Loss) Components |  | Comprehensive Income |  | Where Net Income Is Presented
For the Quarter-to-date periods ended: |  |  |  |
June 30, 2018 |  |  |  |
Unrealized gains and losses on available-for-sale securities |  | $ | — |  |  | Gain on Securities Transactions
|  | — |  |  | Total before Tax
|  | — |  |  | Provision for Income Taxes
|  | $ | — |  |  | Net of Tax
Amortization of defined benefit pension items: |  |  |  |
Prior-service costs |  | $ | (55 | ) | (1) | Salaries and Employee Benefits
Actuarial gains/(losses) |  | (103 | ) | (1) | Salaries and Employee Benefits
|  | (158 | ) |  | Total before Tax
|  | 42 |  |  | Provision for Income Taxes
|  | $ | (116 | ) |  | Net of Tax
Total reclassifications for the period |  | $ | (116 | ) |  | Net of Tax
June 30, 2017 |  |  |  |
Unrealized gains and losses on available-for-sale securities |  | $ | — |  |  | Gain on Securities Transactions
|  | — |  |  | Total before Tax
|  | — |  |  | Provision for Income Taxes
|  | $ | — |  |  | Net of Tax
Amortization of defined benefit pension items: |  |  |  |
Prior-service costs |  | $ | 3 |  | (1) | Salaries and Employee Benefits
Actuarial gains/(losses) |  | (181 | ) | (1) | Salaries and Employee Benefits
|  | (178 | ) |  | Total before Tax
|  | 107 |  |  | Provision for Income Taxes
|  | $ | (71 | ) |  | Net of Tax
Total reclassifications for the period |  | $ | (71 | ) |  | Net of Tax
For the Year-to-date periods ended: |  |  |  |
June 30, 2018 |  |  |  |
Unrealized gains and losses on available-for-sale securities |  | $ | — |  |  | Gain on Securities Transactions
|  | — |  |  | Total before Tax
|  | — |  |  | Provision for Income Taxes
|  | $ | — |  |  | Net of Tax
Amortization of defined benefit pension items: |  |  |  |
Prior-service costs |  | $ | (54 | ) | (2) | Salaries and Employee Benefits
Actuarial gains/(losses) |  | (163 | ) | (2) | Salaries and Employee Benefits
|  | (217 | ) |  | Total before Tax
|  | 56 |  |  | Provision for Income Taxes
|  | $ | (161 | ) |  | Net of Tax
Reclassifications Out of Accumulated Other Comprehensive Income
|  | Amounts Reclassified |  |
Details about Accumulated Other |  | from Accumulated Other |  | Affected Line Item in the Statement
Comprehensive Income (Loss) Components |  | Comprehensive Income |  | Where Net Income Is Presented
Total reclassifications for the period |  | $ | (161 | ) |  | Net of Tax
June 30, 2017 |  |  |  |
Unrealized gains and losses on available-for-sale securities |  | $ | — |  |  | Gain on Securities Transactions
|  | — |  |  | Total before Tax
|  | — |  |  | Provision for Income Taxes
|  | $ | — |  |  | Net of Tax
Amortization of defined benefit pension items: |  |  |  |
Prior-service costs |  | 6 |  | (2) | Salaries and Employee Benefits
Actuarial gains/(losses) |  | $ | (359 | ) | (2) | Salaries and Employee Benefits
|  | (353 | ) |  | Total before Tax
|  | 175 |  |  | Provision for Income Taxes
|  | $ | (178 | ) |  | Net of Tax
Total reclassifications for the period |  | $ | (178 | ) |  | Net of Tax
(1) These accumulated other comprehensive income components are included in the computation of net periodic pension cost.

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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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- 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e526-108580 + Details
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