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Comprehensive Income (Tables) | 6 Months Ended
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Jun. 30, 2015
Comprehensive Income [Abstract] |
Schedule of Comprehensive Income (Loss) [Table Text Block] | The following table presents the components of other comprehensive income for the three and six months ended June 30, 2015 and 2014:
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
2015 |  |  |  |  |  |  |  |  |  |  |  |
Net Unrealized Securities Holding Losses Arising During the Period | $ | (1,668 | ) |  | $ | 654 |  |  | $ | (1,014 | ) |  | $ | (261 | ) |  | $ | 102 |  |  |  | $ | (159 | )
Reclassification Adjustment for Securities Gains Included in Net Income | (16 | ) |  | 6 |  |  | (10 | ) |  | (106 | ) |  | 41 |  |  |  | (65 | )
Amortization of Net Retirement Plan Actuarial Loss | 194 |  |  | (76 | ) |  | 118 |  |  | 387 |  |  | (152 | ) |  |  | 235 |
Accretion of Net Retirement Plan Prior Service Credit | (15 | ) |  | 6 |  |  | (9 | ) |  | (28 | ) |  | 12 |  |  |  | (16 | )
Other Comprehensive Loss | $ | (1,505 | ) |  | $ | 590 |  |  | $ | (915 | ) |  | $ | (8 | ) |  | $ | 3 |  |  |  | $ | (5 | )
2014 |  |  |  |  |  |  |  |  |  |  |  |
Net Unrealized Securities Holding Gains Arising During the Period | $ | 850 |  |  | $ | (336 | ) |  | $ | 514 |  |  | $ | 1,249 |  |  | $ | (494 | ) |  |  | $ | 755 |
Reclassification Adjustment for Securities Losses Included in Net Income | 27 |  |  | (11 | ) |  | 16 |  |  | 27 |  |  | (11 | ) |  |  | 16 |
Amortization of Net Retirement Plan Actuarial Loss | 114 |  |  | (45 | ) |  | 69 |  |  | 230 |  |  | (91 | ) |  |  | 139 |
Accretion of Net Retirement Plan Prior Service Credit | (21 | ) |  | 8 |  |  | (13 | ) |  | (43 | ) |  | 17 |  |  |  | (26 | )
Other Comprehensive Income | $ | 970 |  |  | $ | (384 | ) |  | $ | 586 |  |  | $ | 1,463 |  |  | $ | (579 | ) |  |  | $ | 884 |
Changes in Accumulated Other Comprehensive Income By Component [Table Text Block] | 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, 2015 | $ | 3,339 |  |  | $ | (9,138 | ) |  | $ | (457 | ) |  | $ | (6,256 | )
Other comprehensive income or loss before reclassifications | (1,014 | ) |  | — |  |  | — |  |  | (1,014 | )
Amounts reclassified from accumulated other comprehensive income | (10 | ) |  | 118 |  |  | (9 | ) |  | 99 |
Net current-period other comprehensive income | (1,024 | ) |  | 118 |  |  | (9 | ) |  | (915 | )
June 30, 2015 | $ | 2,315 |  |  | $ | (9,020 | ) |  | $ | (466 | ) |  | $ | (7,171 | )
March 31, 2014 | $ | 2,615 |  |  | $ | (6,627 | ) |  | $ | (63 | ) |  | $ | (4,075 | )
Other comprehensive income or loss before reclassifications | 514 |  |  | — |  |  | — |  |  | 514 |
Amounts reclassified from accumulated other comprehensive income | 16 |  |  | 69 |  |  | (13 | ) |  | 72 |
Net current-period other comprehensive income | 530 |  |  | 69 |  |  | (13 | ) |  | 586 |
June 30, 2014 | $ | 3,145 |  |  | $ | (6,558 | ) |  | $ | (76 | ) |  | $ | (3,489 | )
For the Year-To-Date periods ended: |  |  |  |  |  |  |
December 31, 2014 | $ | 2,539 |  |  | $ | (9,255 | ) |  | $ | (450 | ) |  | $ | (7,166 | )
Other comprehensive income or loss before reclassifications | (159 | ) |  | — |  |  | — |  |  | (159 | )
Amounts reclassified from accumulated other comprehensive income | (65 | ) |  | 235 |  |  | (16 | ) |  | 154 |
Net current-period other comprehensive income | (224 | ) |  | 235 |  |  | (16 | ) |  | (5 | )
June 30, 2015 | $ | 2,315 |  |  | $ | (9,020 | ) |  | $ | (466 | ) |  | $ | (7,171 | )
December 31, 2013 | $ | 2,374 |  |  | $ | (6,697 | ) |  | $ | (50 | ) |  | $ | (4,373 | )
Other comprehensive income or loss before reclassifications | 755 |  |  | — |  |  | — |  |  | 755 |
Amounts reclassified from accumulated other comprehensive income | 16 |  |  | 139 |  |  | (26 | ) |  | 129 |
Net current-period other comprehensive income | 771 |  |  | 139 |  |  | (26 | ) |  | 884 |
June 30, 2014 | $ | 3,145 |  |  | $ | (6,558 | ) |  | $ | (76 | ) |  | $ | (3,489 | )
(1) All amounts are net of tax. Amounts in parentheses indicate debits.
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] | The following table presents the reclassifications out of accumulated other comprehensive income:
Reclassifications Out of Accumulated Other Comprehensive Income (1)
|  | 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, 2015 |  |  |  |
Unrealized gains and losses on available-for-sale securities |  | $ | 16 |  |  | Gain on Securities Transactions
|  | 16 |  |  | Total before Tax
|  | (6 | ) |  | Provision for Income Taxes
|  | $ | 10 |  |  | Net of Tax
Amortization of defined benefit pension items: |  |  |  |
Prior-service costs |  | $ | 15 |  | (2) | Salaries and Employee Benefits
Actuarial gains/(losses) |  | (194 | ) | (2) | Salaries and Employee Benefits
|  | (179 | ) |  | Total before Tax
|  | 70 |  |  | Provision for Income Taxes
|  | $ | (109 | ) |  | Net of Tax
Total reclassifications for the period |  | $ | (99 | ) |  | Net of Tax
June 30, 2014 |  |  |  |
Unrealized gains and losses on available-for-sale securities |  | $ | (27 | ) |  | Gain on Securities Transactions
|  | (27 | ) |  | Total before Tax
|  | 11 |  |  | Provision for Income Taxes
|  | $ | (16 | ) |  | Net of Tax
Amortization of defined benefit pension items: |  |  |  |
Prior-service costs |  | $ | 21 |  | (2) | Salaries and Employee Benefits
Actuarial gains/(losses) |  | (114 | ) | (2) | Salaries and Employee Benefits
|  | (93 | ) |  | Total before Tax
|  | 37 |  |  | Provision for Income Taxes
|  | $ | (56 | ) |  | Net of Tax
Total reclassifications for the period |  | $ | (72 | ) |  | Net of Tax
Reclassifications Out of Accumulated Other Comprehensive Income (1)
|  | 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 Year-to-date periods ended: |  |  |  |
June 30, 2015 |  |  |  |
Unrealized gains and losses on available-for-sale securities |  | $ | 106 |  |  | Gain on Securities Transactions
|  | 106 |  |  | Total before Tax
|  | (41 | ) |  | Provision for Income Taxes
|  | $ | 65 |  |  | Net of Tax
Amortization of defined benefit pension items: |  |  |  |
Prior-service costs |  | $ | 28 |  | (2) | Salaries and Employee Benefits
Actuarial gains/(losses) |  | (387 | ) | (2) | Salaries and Employee Benefits
|  | (359 | ) |  | Total before Tax
|  | 141 |  |  | Provision for Income Taxes
|  | $ | (218 | ) |  | Net of Tax
Total reclassifications for the period |  | $ | (153 | ) |  | Net of Tax
June 30, 2014 |  |  |  |
Unrealized gains and losses on available-for-sale securities |  | $ | (27 | ) |  | Gain on Securities Transactions
|  | (27 | ) |  | Total before Tax
|  | 11 |  |  | Provision for Income Taxes
|  | $ | (16 | ) |  | Net of Tax
Amortization of defined benefit pension items: |  |  |  |
Prior-service costs |  | 43 |  | (2) | Salaries and Employee Benefits
Actuarial gains/(losses) |  | $ | (230 | ) | (2) | Salaries and Employee Benefits
|  | (187 | ) |  | Total before Tax
|  | 74 |  |  | Provision for Income Taxes
|  | $ | (113 | ) |  | Net of Tax
Total reclassifications for the period |  | $ | (129 | ) |  | Net of Tax
(1) Amounts in parentheses indicate debits to profit/loss. (2) These accumulated other comprehensive income components are included in the computation of net periodic pension cost.

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