Loans and Allowance for Loan Losses - Average Recorded Investment and Interest Income (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
With no related allowance recorded:
With no related allowance recorded, Average Recorded Investment	$ 3,392	$ 2,542
With no related allowance recorded, Interest Recognized For The Period Ended	6	0
With an allowance recorded:
With an allowance recorded, Average Recorded Investment	4,984	6,614
With an allowance recorded, Interest Recognized For The Period Ended	36	46
Total average recorded investment	8,376	9,156
Total interest income recognized For the Period Ended	42	46
Commercial, financial, and agricultural
With no related allowance recorded:
With no related allowance recorded, Average Recorded Investment	1,097	1,330
With no related allowance recorded, Interest Recognized For The Period Ended	0	0
With an allowance recorded:
With an allowance recorded, Average Recorded Investment	1,120	1,276
With an allowance recorded, Interest Recognized For The Period Ended	8	11
Residential real estate
With no related allowance recorded:
With no related allowance recorded, Average Recorded Investment	898	850
With no related allowance recorded, Interest Recognized For The Period Ended	0	0
With an allowance recorded:
With an allowance recorded, Average Recorded Investment	3,348	4,160
With an allowance recorded, Interest Recognized For The Period Ended	20	25
Commercial real estate
With no related allowance recorded:
With no related allowance recorded, Average Recorded Investment	1,178	170
With no related allowance recorded, Interest Recognized For The Period Ended	6	0
With an allowance recorded:
With an allowance recorded, Average Recorded Investment	352	946
With an allowance recorded, Interest Recognized For The Period Ended	2	9
Commercial real estate \| Construction
With no related allowance recorded:
With no related allowance recorded, Average Recorded Investment	209	158
With no related allowance recorded, Interest Recognized For The Period Ended	0	0
Installment and other consumer
With no related allowance recorded:
With no related allowance recorded, Average Recorded Investment	10	34
With no related allowance recorded, Interest Recognized For The Period Ended	0	0
With an allowance recorded:
With an allowance recorded, Average Recorded Investment	164	232
With an allowance recorded, Interest Recognized For The Period Ended	$ 6	$ 1

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+ References

No definition available.

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

+ References

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=118936363&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=118936363&loc=d3e5258-111524

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- Definition

Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

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Amount of average investment of impaired financing receivables for which there is no related allowance for credit losses.

+ References

Reference 1: 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=118936363&loc=d3e5258-111524

Reference 2: 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=118936363&loc=d3e5212-111524

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