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Condensed Financial Information - Parent Company Only (Schedule of Condensed Income Statement) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Interest and Dividend Income, Operating [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest and fees on loans |  |  |  |  |  |  |  |  |  |  |  |  | $ 27,890 | $ 24,821 | $ 23,037
Interest Expense [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense on borrowings |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 57 | 136
Income Tax (Benefit) |  |  |  |  |  |  |  |  |  |  |  |  | 1,314 | 3,626 | 2,553
Net income | $ 2,081 | $ 1,860 | $ 2,521 | $ 2,539 | $ 1,710 | $ 2,007 | $ 2,027 | $ 2,042 | $ 1,805 | $ 1,430 | $ 1,610 | $ 1,525 | 9,001 | 7,786 | 6,370
Comprehensive income |  |  |  |  |  |  |  |  |  |  |  |  | 7,138 | 8,069 | 5,295
Parent Company [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest and Dividend Income, Operating [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends from subsidiary bank |  |  |  |  |  |  |  |  |  |  |  |  | 3,500 | 3,800 | 4,350
Interest and fees on loans |  |  |  |  |  |  |  |  |  |  |  |  | 115 | 106 | 97
Other interest and dividends |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 2
Other income |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 149
Total income |  |  |  |  |  |  |  |  |  |  |  |  | 3,615 | 3,906 | 4,598
Interest Expense [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense on borrowings |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 143
Other operating expenses |  |  |  |  |  |  |  |  |  |  |  |  | 272 | 255 | 211
Total expenses |  |  |  |  |  |  |  |  |  |  |  |  | 272 | 255 | 354
Income before income tax (benefit) and equity in undistributed earnings of subsidiary bank |  |  |  |  |  |  |  |  |  |  |  |  | 3,343 | 3,651 | 4,244
Income Tax (Benefit) |  |  |  |  |  |  |  |  |  |  |  |  | (45) | (58) | (36)
Income before equity in undistributed earnings of subsidiary bank |  |  |  |  |  |  |  |  |  |  |  |  | 3,388 | 3,709 | 4,280
Equity in Undistributed Net Income of Subsidiary Bank |  |  |  |  |  |  |  |  |  |  |  |  | 5,613 | 4,077 | 2,090
Net income |  |  |  |  |  |  |  |  |  |  |  |  | 9,001 | 7,786 | 6,370
Comprehensive income |  |  |  |  |  |  |  |  |  |  |  |  | $ 7,138 | $ 8,069 | $ 5,295

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- Definition This element represents disclosure of the total aggregate cash dividends paid to the entity by consolidated subsidiaries, by unconsolidated subsidiaries, and by 50% or less owned persons accounted for using the equity method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(b)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 235 -Section S99 -Paragraph 2 -Subparagraph (SX 210.9-06) -URI http://asc.fasb.org/extlink&oid=6882215&loc=d3e537971-122884 + Details
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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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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Amount of operating dividend and interest income, including amortization and accretion of premiums and discounts, on available-for-sale securities. + 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 210.9-04.2) -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 320 -SubTopic 10 -Section 35 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82895926&loc=d3e24721-111560 + Details
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- Definition The aggregate interest and fee income generated by: (1) loans the Entity has positive intent and ability to hold for the foreseeable future, or until maturity or payoff, including commercial and consumer loans, whether domestic or foreign, which may consist of: (a) industrial and agricultural; (b) real estate; and (c) real estate construction loans; (d) trade financing; (e) lease financing; (f) home equity lines-of-credit; (g) automobile and other vehicle loans; and (h) credit card and other revolving-type loans and (2) loans and leases held-for-sale which may include mortgage loans, direct financing, and sales-type leases. + 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 210.9-04.1) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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- Definition The amount of interest income and other income recognized during the period. Included in this element is interest derived from investments in debt securities, cash and cash equivalents, and other investments which reflect the time value of money or transactions in which the payments are for the use or forbearance of money and other income from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business). + References No definition available. + Details
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