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Allowance for Loan Losses (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individual loan balance is classified as nonaccrual status or troubled debt restructure	$ 100,000		$ 100,000
Allowance for Loan and Lease Losses, Adjustments, Other	0	$ 200,000	100,000	$ 750,000
Allowance for Loan and Lease Losses Write-offs, Net			$ 875,000	$ 336,000
Allowance For Loan And Lease Losses Write Off Percentage			0.13%	0.05%
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Threshold for individually evaluating loans	250,000		$ 250,000
Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Minimum individual loan balance requiring quarterly review	1,000,000		1,000,000
Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Minimum individual loan balance requiring quarterly review	250,000		250,000
Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Minimum individual loan balance requiring quarterly review	$ 100,000		$ 100,000
Minimum [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Minimum percent of portfolio to be reviewed			50.00%
Maximum [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Minimum percent of portfolio to be reviewed			55.00%

X

- Definition

The percentage of after recoveries, of loans and leases that have been written-off.

+ References

No definition available.

+ Details

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- Definition

Financing Receivable, Minimum Percent Required To Be Reviewed.

+ References

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- Definition

Financing Receivable, Threshold Balance Which Requires Quarterly Reviews.

+ References

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- Definition

Financing Receivable, Allowance For Credit Losses, Threshold For Individually Evaluating Of Impairment.

+ References

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- Definition

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+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Amount of other addition (reduction) in allowance reserve for credit loss.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7(d))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

Amount, after recoveries, of loans and leases that have been written-off.

+ References

No definition available.

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