Loans, Troubled Debt Restructuring (Details)	3 Months Ended	9 Months Ended
Sep. 30, 2019 USD ($) Bank_Loan	Sep. 30, 2018 USD ($) Bank_Loan	Sep. 30, 2019 USD ($) Bank_Loan	Sep. 30, 2018 USD ($) Bank_Loan
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| Bank_Loan	1	1	5	1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 66,000	$ 199,000	$ 378,000	$ 199,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 66,000	$ 199,000	378,000	199,000
Loan modifications classified as troubled debt restructurings [Abstract]
Troubled debt restructurings that subsequently defaulted within 12 months of the restructuring date			$ 22,000	$ 0
Commercial and industrial [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| Bank_Loan	0	0		0
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 0	$ 0	$ 0	$ 0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 0	$ 0	$ 0
Commercial, secured by real estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| Bank_Loan	0	0	2	0
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 0	$ 0	$ 258,000	$ 0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 0	$ 258,000	$ 0
Residential real estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| Bank_Loan	1	1	3	1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 66,000	$ 199,000	$ 120,000	$ 199,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 66,000	$ 199,000	$ 120,000	$ 199,000
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| Bank_Loan	0	0	0	0
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 0	$ 0	$ 0	$ 0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 0	$ 0	$ 0

-- None. No documentation exists for this element. --

No definition available.

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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

No definition available.

+ Details

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

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- Definition

Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

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- Definition

Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

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- Definition

Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953682-111524

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