Commitments and Contingent Liabilities (Details Textual) - USD ($)	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Commitments and Contingent Liabilities (Additional Textual) [Abstract]
Maximum commitment period to make loans	30 days
Standby letters of credit contractual value	$ 5,000,000.0	$ 6,800,000
Maximum subscription amount committed in SBIC investment funds	8,000,000
Investment in SBIC funds	$ 7,200,000
Commitments and Unused Lines of Credit \| Minimum
Commitments and Contingent Liabilities (Textual) [Abstract]
Debt Instrument, Interest Rate, Stated Percentage	2.25%	2.99%
Commitments and Unused Lines of Credit \| Maximum
Commitments and Contingent Liabilities (Textual) [Abstract]
Debt Instrument, Interest Rate, Stated Percentage	21.90%	21.90%

Commitments and Contingent Liabilities (Additional Textual) [Abstract]

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Commitments and Contingent Liabilities (Textual) [Abstract]

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Maximum commitment period to make loans.

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Maximum subscription amount committed in SBIC investment funds.

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Standby letters of credit contractual amount.

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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=120391452&loc=d3e13212-122682

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The cash outflow associated with the purchase of all investments (debt, security, other) during the period.

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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=121586364&loc=d3e3213-108585

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