Loans and Allowance for Loan Losses - Average Recorded Investment and Interest Income (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
With no related allowance recorded:
With no related allowance recorded, Average Recorded Investment	$ 2,535	$ 2,452	$ 2,385	$ 2,515
With no related allowance recorded, Interest Recognized For The Period Ended	0	13		26
With an allowance recorded:
With an allowance recorded, Average Recorded Investment	5,966	7,663	6,331	7,881
With an allowance recorded, Interest Recognized For The Period Ended	40	28	85	73
Total average recorded investment	8,501	10,115	8,716	10,396
Total interest income recognized For the Period Ended	40	41	85	99
Commercial, financial, and agricultural
With no related allowance recorded:
With no related allowance recorded, Average Recorded Investment	1,189	1,153	1,304	1,302
With no related allowance recorded, Interest Recognized For The Period Ended	0	0		1
With an allowance recorded:
With an allowance recorded, Average Recorded Investment	1,079	1,621	1,115	1,737
With an allowance recorded, Interest Recognized For The Period Ended	11	8	21	15
Residential real estate
With no related allowance recorded:
With no related allowance recorded, Average Recorded Investment	1,092	933	785	900
With no related allowance recorded, Interest Recognized For The Period Ended	0	3		6
With an allowance recorded:
With an allowance recorded, Average Recorded Investment	3,481	4,118	4,044	4,247
With an allowance recorded, Interest Recognized For The Period Ended	21	14	46	47
Residential real estate \| Construction
With an allowance recorded:
With an allowance recorded, Average Recorded Investment	0	20	0	15
With an allowance recorded, Interest Recognized For The Period Ended	0	0	0	0
Commercial real estate
With no related allowance recorded:
With no related allowance recorded, Average Recorded Investment	107	116	144	237
With no related allowance recorded, Interest Recognized For The Period Ended	0	10		19
With an allowance recorded:
With an allowance recorded, Average Recorded Investment	1,170	1,732	927	1,691
With an allowance recorded, Interest Recognized For The Period Ended	7	5	16	10
Commercial real estate \| Construction
With no related allowance recorded:
With no related allowance recorded, Average Recorded Investment	147	113	152	42
With no related allowance recorded, Interest Recognized For The Period Ended	0	0	0	0
With an allowance recorded:
With an allowance recorded, Average Recorded Investment		0		24
With an 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	0	137	0	34
With no related allowance recorded, Interest Recognized For The Period Ended	0	0	0	0
With an allowance recorded:
With an allowance recorded, Average Recorded Investment	236	172	245	167
With an allowance recorded, Interest Recognized For The Period Ended	$ 1	$ 1	$ 2	$ 1

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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=84173941&loc=d3e5212-111524

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5258-111524

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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=84173941&loc=d3e5258-111524

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-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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