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Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2018 | Mar. 31, 2017
Statement Of Income And Comprehensive Income [Abstract] |  |  |
Net income |  | $ 1,004 | $ 1,994
Other comprehensive (loss) income: |  |  |
Unrealized (losses) gains arising during the period on available-for-sale securities, net of income tax impact of ($475) and $195, respectively |  | (1,788) | 379
Reclassification adjustment for net gain on sales of available-for-sale securities included in net income, net of income tax impact of $20 and $3, respectively | [1] | (78) | (5)
Change in defined benefit plans, net of income tax impact of $0 and ($1), respectively | [2] | (1) | (3)
Total other comprehensive (loss) income |  | (1,867) | 371
Total comprehensive (loss) income |  | $ (863) | $ 2,365
[1] | Amounts are included in net gain on sales of investment securities on the Consolidated Statements of Income as a separate element within total noninterest income.
[2] | Amounts are included in the computation of net periodic benefit cost and are included in salaries and employee benefits on the Consolidated Statements of Income as a separate element within total noninterest expense.

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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e557-108580 + Details
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