Loans and Allowance for Loan and Lease Losses - Loans Modified in a Troubled Debt Restructuring (Details) $ in Thousands	12 Months Ended
Dec. 31, 2020 USD ($) DebtSecurityNumber	Dec. 31, 2019 USD ($) DebtSecurityNumber
Number of Loans \| DebtSecurityNumber	5	5
Pre- Modification Outstanding Principal Balance	$ 282	$ 282
Post- Modification Principal Balance	$ 51	$ 136
Real Estate [Member] \| Construction, Land Development and Other Land Loans [Member]
Number of Loans \| DebtSecurityNumber	1	1
Pre- Modification Outstanding Principal Balance	$ 107	$ 107
Post- Modification Principal Balance		$ 62
Real Estate [Member] \| Secured by 1-4 Family Residential Properties [Member]
Number of Loans \| DebtSecurityNumber	2	2
Pre- Modification Outstanding Principal Balance	$ 59	$ 59
Post- Modification Principal Balance	$ 12	$ 14
Commercial and Industrial Loans [Member]
Number of Loans \| DebtSecurityNumber	2	2
Pre- Modification Outstanding Principal Balance	$ 116	$ 116
Post- Modification Principal Balance	$ 39	$ 60

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

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.

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

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