Loans (Additional Information) (Details)	3 Months Ended	6 Months Ended
Jun. 30, 2020 USD ($) loan	Jun. 30, 2019 loan	Jun. 30, 2020 USD ($) loan	Jun. 30, 2019 loan	Dec. 31, 2019 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income on non-accrual loans	$ 13,000		$ 16,000
Troubled debt restructurings	114,000		114,000
Additional lending amount to customers whose loan terms has been modified in troubled debt restructuring	$ 0		$ 0		$ 0
Number of loans modified as troubled debt restructurings \| loan	0	0	0	0
Number of loans modified as troubled debt restructuring subsequently defaulted \| loan	0	0	0	0
Threshold amount to individually classify loans by credit risk	$ 250,000		$ 250,000
CARES Act \| Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
PPP loans guaranteed by the SBA, CARES Act	$ 349,546,000		$ 349,546,000

Financing Receivable, Amount Of Loans Authorized, Paycheck Protection Program

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

Troubled debt restructuring, additional lending amount

+ References

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.

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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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