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Loans and Allowance for Loan Losses (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Loans and Allowance for Loan Losses (Textual)
Part of loans of 30 days or more past due as a percentage of total loan portfolio	0.26%	0.34%
Loans over 90 days past due and still accruing
Real estate loan percentage of total loan	82.30%	82.10%
Consumer loans percentage of total real estate loan	38.00%
Mortgage loan pledged as collateral for advances from FHLB	$ 597,600
Foregone interest income on non accrual loans	$ 53	$ 309
Commercial loans percentage of total loan portfolio	62.00%
Net of deferred loan fees and costs	$ 2,800	$ 2,300
Owner occupied RE [Member]
Loans and Allowance for Loan Losses (Textual)
Commercial loans percentage of total loan portfolio	21.90%
Non-owner occupied RE [Member]
Loans and Allowance for Loan Losses (Textual)
Commercial loans percentage of total loan portfolio	24.10%
Construction [Member]
Loans and Allowance for Loan Losses (Textual)
Commercial loans percentage of total loan portfolio	5.00%
Commercial [Member]
Loans and Allowance for Loan Losses (Textual)
Part of loans of 30 days or more past due as a percentage of total loan portfolio	0.01%	0.12%
Consumer [Member]
Loans and Allowance for Loan Losses (Textual)
Part of loans of 30 days or more past due as a percentage of total loan portfolio	0.25%	0.23%

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- Definition

Commercial loans percentage of aggregate real estate loan.

+ References

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Consumer loans percentage of aggregate real estate loan.

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Foregone interest income on non accrual loans .

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Loan and allowance for loan losses textual.

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Mortgage loan pledged as collateral for advances from FHLB.

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Part of loans of thirty days or more past due as a percentage of aggregate loan portfolio.

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Real estate loan percentage of aggregate loan.

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Recorded investment in financing receivables that are 90 days or more past due and still accruing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
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-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524

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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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