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Accumulated Other Comprehensive Income (Loss) (Significant Amounts Reclassified Out Of Each Component Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Net realized gains on sales of securities |  | $ 348 | $ 284 | $ 626
Income tax expense |  | (6,551) | (1,884) | (1,632)
Net income |  | 8,198 | 6,711 | $ 5,908
Amount Reclassified From Accumulated Other Comprehensive Income (Loss) [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Income tax expense | [1] | (118) | (99) |
Net income | [1] | 230 | 185 |
Amount Reclassified From Accumulated Other Comprehensive Income (Loss) [Member] | Unrealized gains (losses) on available for sale securities [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Net realized gains on sales of securities | [1] | $ 348 | $ 284 |
[1] | Amounts in parentheses indicate debits to net income.

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- Definition The net gain (loss) realized from the sale, exchange, redemption, or retirement of securities, not separately or otherwise categorized as trading, available-for-sale, or held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13(h)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.3) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 + Details
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