Investment Securities - (Details Textual)	3 Months Ended	9 Months Ended
Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Investments, Debt and Equity Securities [Abstract]
Proceeds from sale of investment securities available for sale			$ 44,495,000	$ 99,106,000
Gross realized gain on sale	$ 858,000	$ 196,000	1,200,000	314,000
Gross realized loss on sale	142,000	$ 162,000	204,000	215,000
Proceeds from sale of investment securities held to maturity			0	$ 1,766,000
Investment securities pledged as collateral	$ 102,400,000		$ 102,400,000		$ 122,300,000
Number of securities that have unrealized losses	28		28
Securities deemed to be other than temporary			$ 0

Debt Securities, Held-to-maturity, Sold, Realized Gain

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Debt Securities, Held-to-maturity, Sold, Realized Loss

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Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (b)(3)
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The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

+ References

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Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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The cash inflow associated with the sale of securities that had been designated as held-to-maturity. Excludes proceeds from maturities, prepayments and calls by the issuer.

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Fair value of financial instrument held by the entity for its own account (proprietary securities) for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions.

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