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Loans and Allowance - Summary of Troubled Debt Restructurings by Modification Type (Details)	3 Months Ended
	Mar. 31, 2021 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Pre- Modification Recorded Balance	$ 973,000
Post - Modification Recorded Balance	$ 975,000
Number of Loans	9
Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Pre- Modification Recorded Balance	$ 348,000
Post - Modification Recorded Balance	$ 348,000
Number of Loans	2
Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Pre- Modification Recorded Balance	$ 625,000
Post - Modification Recorded Balance	$ 627,000
Number of Loans	7
Term Modification
Accounts, Notes, Loans and Financing Receivable [Line Items]
Modification Recorded Balance	$ 731,000
Term Modification | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Modification Recorded Balance	348,000
Term Modification | Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Modification Recorded Balance	383,000
Rate Modification
Accounts, Notes, Loans and Financing Receivable [Line Items]
Modification Recorded Balance	126,000
Rate Modification | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Modification Recorded Balance	0
Rate Modification | Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Modification Recorded Balance	126,000
Combination
Accounts, Notes, Loans and Financing Receivable [Line Items]
Modification Recorded Balance	118,000
Combination | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Modification Recorded Balance	0
Combination | Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Modification Recorded Balance	$ 118,000

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

+ 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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Amount, after troubled debt restructuring, of modified financing receivable.

+ 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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Amount, before troubled debt restructuring, of financing receivable to be modified.

+ 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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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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-SubTopic 40
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-URI http://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554

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