Loans and Allowance for Loan Losses (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Loss [Line Items]
Part of loans of 30 days or more past due as a percentage of total loan portfolio	0.23%	0.26%
Real estate loan percentage of total loan	82.80%
Consumer loans percentage of total real estate loan	38.50%
Mortgage loan pledged as collateral for advances from FHLB	$ 716,000	$ 5,976
Commercial loans percentage of total real estate loan	61.50%
Foregone interest income on non accrual loans	$ 23	53
Net of deferred loan fees and costs	$ 33	$ 28
Owner occupied RE [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Commercial loans percentage of total real estate loan	21.00%
Construction [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Commercial loans percentage of total real estate loan	4.10%
Non-owner occupied RE [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Commercial loans percentage of total real estate loan	25.80%
Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Part of loans of 30 days or more past due as a percentage of total loan portfolio	0.13%	0.25%
Commercial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Part of loans of 30 days or more past due as a percentage of total loan portfolio	0.10%	0.01%