Loans (Narrative) (Details)	12 Months Ended
Dec. 31, 2020 USD ($) loan	Dec. 31, 2019 USD ($) loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income recognized on non-accrual loans	$ 28,000
Troubled debt restructurings	111,000	$ 116,000
Allowance for troubled debt restructurings	0
Troubled debt restructuring, additional lending amount	$ 0	$ 0
Number of loans modified as debt restructurings \| loan	0	0
Number of loans that subsequently default after modification \| loan	0	0
Threshold amount to individually evaluate loans for impairment	$ 250,000
PPP Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans originated under government program	351,300,000
Loans originated under government program, net of deferred fees	$ 339,300,000
Number of loans outstanding under government program \| loan	3,070
PPP Loans \| Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans outstanding under government program	$ 186,000,000.0
Loans outstanding under government program, net of deferred fees	$ 182,000,000.0

Financing Receivable, Amount Of Loans Authorized

No definition available.

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- Definition

Financing Receivable, Amount Of Loans Authorized, Net Of Deferred Fees

+ References

No definition available.

+ Details

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- Definition

Financing Receivable, Amount Of Loans Authorized Originated

+ References

No definition available.

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- Definition

Financing Receivable, Amount Of Loans Originated, Net Of Deferred Fees

+ References

No definition available.

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- Definition

Financing Receivable, Individually Evaluated for Impairment, Threshold Amount

+ References

No definition available.

+ Details

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- Definition

Financing Receivable, Number Of Loans Authorized

+ References

No definition available.

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- Definition

Financing Receivable, Troubled Debt Restructuring, Allowance For Credit Losses

+ References

No definition available.

+ Details

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- Definition

Troubled debt restructuring, additional lending amount

+ References

No definition available.

+ Details

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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.

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- Definition

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

+ References

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- Definition

Amount of financing receivable modified as troubled debt restructuring.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524

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-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554

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- Definition

Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953682-111524

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- Definition

Amount of interest income on financing receivable on nonaccrual status.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919258-210447

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