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Commitments and Contingent Liabilities (Details Textual) - USD ($) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Commitments and Contingent Liabilities (Additional Textual) [Abstract] |  |
Maximum commitment period to make loans | 30 days |
Standby letters of credit contractual value | $ 5,200,000 | $ 4,900,000
Maximum subscription amount committed in SBIC investment funds | 8,000,000 |
Investment in SBIC funds | $ 6,000,000 |
Commitments and Unused Lines of Credit | Minimum |  |
Commitments and Contingent Liabilities (Textual) [Abstract] |  |
Debt Instrument, Interest Rate, Stated Percentage | 2.99% | 2.99%
Commitments and Unused Lines of Credit | Maximum |  |
Commitments and Contingent Liabilities (Textual) [Abstract] |  |
Debt Instrument, Interest Rate, Stated Percentage | 16.00% | 16.00%

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- Definition Commitments and Contingent Liabilities (Additional Textual) [Abstract] + References No definition available. + Details
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- Definition Maximum commitment period to make loans. + References No definition available. + Details
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- Definition Maximum subscription amount committed in SBIC investment funds. + References No definition available. + Details
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- Definition Standby letters of credit contractual amount. + References No definition available. + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The cash outflow associated with the purchase of all investments (debt, security, other) during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
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