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Accumulated Other Comprehensive Loss (Tables) | 3 Months Ended
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Mar. 31, 2018
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract] |
Components of Accumulated Other Comprehensive Loss, Net of Taxes | The components of accumulated other comprehensive loss, net of taxes, are as follows:
(Dollars in thousands) |  | Unrealized Loss on Securities |  |  | Defined Benefit Plans |  |  | Accumulated Other Comprehensive Loss |
Balance - March 31, 2018 |  | $ | (3,990 | ) |  | $ | 84 |  |  | $ | (3,906 | )
Balance - December 31, 2017 |  | $ | (2,159 | ) |  | $ | 85 |  |  | $ | (2,074 | )

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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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