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Fair Value of Financial Instruments (Fair Value by Balance Sheet Grouping) (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2018 | Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Cash and due from banks | $ 21,725 | $ 82,273 |
Interest bearing deposits in banks | 1,832 | 1,479 |
Investment securities - AFS | 138,645 | 146,470 |
Investment securities - HTM | 91,896 | 95,346 |
Restricted bank stock | 5,394 | 5,204 |
Loans, net | 938,110 | 883,936 | [1]
Financial derivatives | 1,689 | 781 |
Accrued interest receivable | 4,069 | 3,814 |
Deposits - non-maturity | 801,017 | 805,263 |
Deposits - time deposits | 224,295 | 235,489 |
Short-term borrowed funds | 86,805 | 48,845 |
Long-term borrowed funds | 97,622 | 123,906 |
Accrued interest payable | 358 | 453 |
Off balance sheet financial instruments | 0 | 0 |
Reported Value Measurement [Member] |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Cash and due from banks | 21,725 | 82,273 |
Interest bearing deposits in banks | 1,832 | 1,479 |
Investment securities - AFS | 138,645 | 146,470 |
Investment securities - HTM | 93,726 | 93,632 |
Restricted bank stock | 5,394 | 5,204 |
Loans, net | 953,737 | 882,546 | [1]
Financial derivatives | 1,689 | 781 |
Accrued interest receivable | 4,069 | 3,814 |
Deposits - non-maturity | 801,017 | 805,263 |
Deposits - time deposits | 223,558 | 234,127 |
Short-term borrowed funds | 86,805 | 48,845 |
Long-term borrowed funds | 100,929 | 120,929 |
Accrued interest payable | 358 | 453 |
Off balance sheet financial instruments | 0 | 0 |
Fair Value, Inputs, Level 1 [Member] |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Cash and due from banks | 21,725 | 82,273 |
Interest bearing deposits in banks | 1,832 | 1,479 |
Off balance sheet financial instruments | 0 | 0 |
Fair Value, Inputs, Level 2 [Member] |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Investment securities - AFS | 122,077 | 131,550 |
Investment securities - HTM | 81,444 | 86,836 |
Restricted bank stock | 5,394 | 5,204 |
Financial derivatives | 1,689 | 781 |
Accrued interest receivable | 4,069 | 3,814 |
Deposits - non-maturity | 801,017 | 805,263 |
Deposits - time deposits | 224,295 | 235,489 |
Short-term borrowed funds | 86,805 | 48,845 |
Long-term borrowed funds | 97,622 | 123,906 |
Accrued interest payable | 358 | 453 |
Fair Value, Inputs, Level 3 [Member] |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Investment securities - AFS | 16,568 | 14,920 |
Investment securities - HTM | 10,452 | 8,510 |
Loans, net | $ 938,110 | $ 883,936 | [1]
[1] | In accordance with the prospective adoption of Accounting Standards Update ("ASU") 2016-01, the fair value of loans at September 30, 2018 was measured using an exit price notion. The fair value of loans at December 31, 2017 was measured using an entry price notion.

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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. Includes disclosure of claims held for interest amounts due a company. + References No definition available. + Details
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- Definition For banks and other depository institutions (including Federal Reserve Banks, if applicable): The fair value of Interest-bearing deposits in other financial institutions for relatively short periods of time including, for example, certificates of deposits. + References No definition available. + Details
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- Definition Investment Securities, Available For Sale, Fair Value + References No definition available. + Details
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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. Includes deposit liabilities having no set maturity (excluding time deposits) + References No definition available. + Details
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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure. This item represents the aggregate of all time deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing. + References No definition available. + Details
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- Definition Fair value portion of accrued expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The fair value of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 + Details
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- Definition Fair value of investments in debt securities classified as held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563 + Details
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- Definition Fair value as of the balance sheet date of all interest rate derivative assets designated as cash flow hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959 + Details
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- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2196772 + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date. + References No definition available. + Details
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