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Comprehensive Income (Tables) | 6 Months Ended
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Jun. 30, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | The following table represents the reclassification out of accumulated other comprehensive (loss) income for the periods presented:
Details about Accumulated Other |  | Amounts Reclassified from Accumulated |  | Affected Line item in the
Comprehensive Loss Components |  | Other Comprehensive Income |  | Statement Where Net Income is Presented
|  | Three Months Ended |  | Six Months Ended |  |
|  | June 30, |  | June 30, |  |
|  | 2019 |  | 2018 |  | 2019 |  | 2018 |  |
|  | (dollars in thousands) |  |
Sale of investment securities available for sale |  | $ | (9 | ) |  | $ | - |  |  | $ | (1 | ) |  | $ | - |  |  | Net losses on sale of securities available-for-sale
|  |  | 2 |  |  |  | - |  |  |  | - |  |  |  | - |  |  | Income tax benefit
|  |  | (7 | ) |  |  | - |  |  |  | (1 | ) |  |  | - |  |  |
Amortization of pension plan net actuarial losses |  |  | (90 | ) |  |  | (92 | ) |  |  | (179 | ) |  |  | (183 | ) |  | Other components of net periodic pension expense.
|  |  | 25 |  |  |  | 26 |  |  |  | 50 |  |  |  | 51 |  |  | Income tax benefit
|  |  | (65 | ) |  |  | (66 | ) |  |  | (129 | ) |  |  | (132 | ) |  |
Total reclassification |  | $ | (72 | ) |  | $ | (66 | ) |  | $ | (130 | ) |  | $ | (132 | ) |  |
Comprehensive Income (Loss) [Table Text Block] |
|  | June 30, |  | December 31,
|  | 2019 |  | 2018
|  | (dollars in thousands)
Investment securities available-for-sale, net of tax |  | $ | 1,268 |  |  | $ | (5,841 | )
Cash flow hedge, net of tax |  |  | (89 | ) |  |  | 837 |
Defined benefit pension and post-retirement plans, net of tax |  |  | (4,060 | ) |  |  | (3,785 | )
Total |  | $ | (2,881 | ) |  | $ | (8,789 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=118930883&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://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=118930883&loc=d3e526-108580 + Details
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