Loans and Allowance for Loan Losses - Impaired Loans (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2020	Dec. 31, 2019
Impaired loans with no related allowance recorded, carrying amount	$ 3,680	$ 2,861
Impaired loans with no related allowance recorded, unpaid principal balance	3,680	2,861
Impaired loans, related allowances	78	227
Impaired loans with no related allowance recorded, carrying amount	107	256
Impaired loans with no related allowance recorded, unpaid principal balance	107	256
Impaired loans, carrying amount	3,787	3,117
Impaired loans, unpaid principal balance	3,787	3,117
Impaired loans, average recorded investment	3,756	2,876
Impaired loans, interest income recognized	23	86
Impaired loans, interest income received	23	86
Real Estate [Member] \| Construction, Land Development and Other Land Loans [Member]
Impaired loans, average recorded investment		181
Real Estate [Member] \| Secured by 1-4 Family Residential Properties [Member]
Impaired loans with no related allowance recorded, carrying amount	932	984
Impaired loans with no related allowance recorded, unpaid principal balance	932	984
Impaired loans, related allowances	13	14
Impaired loans with no related allowance recorded, carrying amount	20	21
Impaired loans with no related allowance recorded, unpaid principal balance	20	21
Impaired loans, carrying amount	952	1,005
Impaired loans, unpaid principal balance	952	1,005
Impaired loans, average recorded investment	890	1,021
Impaired loans, interest income recognized	5	48
Impaired loans, interest income received	4	48
Real Estate [Member] \| Secured By Non-farm Non residential Properties [Member]
Impaired loans with no related allowance recorded, carrying amount	2,748	1,877
Impaired loans with no related allowance recorded, unpaid principal balance	2,748	1,877
Impaired loans, carrying amount	2,748	1,877
Impaired loans, unpaid principal balance	2,748	1,877
Impaired loans, average recorded investment	2,754	645
Impaired loans, interest income recognized	14	29
Impaired loans, interest income received	14	29
Commercial and Industrial Loans [Member]
Impaired loans, related allowances	62	206
Impaired loans with no related allowance recorded, carrying amount	62	206
Impaired loans with no related allowance recorded, unpaid principal balance	62	206
Impaired loans, carrying amount	62	206
Impaired loans, unpaid principal balance	62	206
Impaired loans, average recorded investment	86	991
Impaired loans, interest income recognized	3	7
Impaired loans, interest income received	3	7
Direct Consumer [Member]
Impaired loans, related allowances	3	7
Impaired loans with no related allowance recorded, carrying amount	25	29
Impaired loans with no related allowance recorded, unpaid principal balance	25	29
Impaired loans, carrying amount	25	29
Impaired loans, unpaid principal balance	25	29
Impaired loans, average recorded investment	26	38
Impaired loans, interest income recognized	1	2
Impaired loans, interest income received	$ 2	$ 2

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5212-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5258-111524

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953550-111524

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