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Loans and Allowance for Loan Losses - Summary of Major Classifications of Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
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Loans And Leases Receivable Disclosure [Line Items] |  |  |  |
Loans, gross |  | $ 584,384 | $ 598,615 |
Less allowance for loan losses |  | (8,559) | (6,361) | $ (4,134)
Loans, net |  | 575,825 | 592,254 |
Commercial (Secured by Real Estate) |  |  |  |
Loans And Leases Receivable Disclosure [Line Items] |  |  |  |
Loans, gross |  | 262,704 | 178,571 |
Less allowance for loan losses |  | (4,681) | (3,084) | (1,661)
Commercial and Industrial |  |  |  |
Loans And Leases Receivable Disclosure [Line Items] |  |  |  |
Loans, gross |  | 152,835 | 155,554 |
Paycheck Protection Program Loans |  |  |  |
Loans And Leases Receivable Disclosure [Line Items] |  |  |  |
Loans, gross | [1] | 17,883 | 101,749 |
Less allowance for loan losses |  | 0 | 0 |
Construction, Land and Acquisition & Development |  |  |  |
Loans And Leases Receivable Disclosure [Line Items] |  |  |  |
Loans, gross |  | 16,317 | 23,571 |
Less allowance for loan losses |  | (162) | (224) | (153)
Residential Mortgage 1-4 Family |  |  |  |
Loans And Leases Receivable Disclosure [Line Items] |  |  |  |
Loans, gross |  | 63,065 | 91,777 |
Consumer Installment |  |  |  |
Loans And Leases Receivable Disclosure [Line Items] |  |  |  |
Loans, gross |  | 71,580 | 47,393 |
Less allowance for loan losses |  | $ (969) | $ (719) | $ (466)
[1] | Consists of loans that are fully guaranteed by the SBA; thus, no allowance for loan losses has been allocated to these loans.

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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=122038336&loc=d3e74567-122707 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=121614798&loc=d3e15032-111544 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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