Securities (Details Textual)	3 Months Ended	9 Months Ended
Sep. 30, 2021 USD ($) Securities	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) Securities	Sep. 30, 2020 USD ($)
Schedule Of Available For Sale Securities [Line Items]
Proceeds from the sale of portfolio securities	$ 8,200,000	$ 2,300,000	$ 35,200,000	$ 17,700,000
Gross gains realized	458,000	48,000	1,400,000	330,000
Gross losses realized	$ 1,000	0	$ 515,000	12,000
Number of securities \| Securities	718		718
Number of securities on unrealized loss position \| Securities	146		146
Allowance for credit losses on available-for-sale securities	$ 0		$ 0
ASU 2016-01 \| Equity securities
Schedule Of Available For Sale Securities [Line Items]
Realized gains recognized in income statement for securities	$ 5,000		$ 141,000
Realized losses recognized in income statement for securities		$ 22,000		$ 117,000

Number of securities.

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Number of securities on unrealized loss position.

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Amount of allowance for credit loss on 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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Amount of realized gain on 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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Amount of realized loss on 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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Amount of realized gain from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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