Fair Value (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value assets liabilities transfers amount between level 1 and level 2	$ 0	$ 0	$ 0	$ 0
Troubled debt restructurings	4,000		$ 4,000		$ 4,100
Maximum maturity period of short term borrowings			90 days
Measured Using Present Value of Cash Flows
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Troubled debt restructurings	724		$ 724		513
Collateral Dependent Loans
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Collateral dependent loans, unpaid principal balance with allowance recorded	3,500		3,500
Collateral dependent loans, allowance	$ 435		$ 435
Collateral Dependent Impaired Loans
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impaired loans, unpaid principal balance with allowance recorded					2,300
Impaired loans, allowance					$ 368