LOANS - IMPAIRED LOANS AND EFFECT ON INTEREST INCOME (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2018	Dec. 31, 2017
Impaired Loans
Number of days past due to be considered as nonperforming loans	90 days
Recorded investment
With no valuation reserve	$ 8,655	$ 3,170
With a valuation reserve	2,360	682
Total	11,015	3,852
Unpaid Principal Balance	13,853	6,054
Related Allowance for Loan Losses	877	334
Average investment
Average Balance for the Period	7,436	5,137
Interest Income Recognized During Impairment
Interest Income Recognized for the Period	371	281
Commercial real estate
Recorded investment
With no valuation reserve	5,698	1,511
With a valuation reserve	2,148	516
Total	7,846	2,027
Unpaid Principal Balance	9,568	3,326
Related Allowance for Loan Losses	618	168
Average investment
Average Balance for the Period	4,937	2,784
Interest Income Recognized During Impairment
Interest Income Recognized for the Period	265	141
Commercial, financial, and agricultural
Recorded investment
With no valuation reserve	1,157
With a valuation reserve	212	166
Total	1,369	166
Unpaid Principal Balance	1,790	326
Related Allowance for Loan Losses	259	166
Average investment
Average Balance for the Period	768	246
Interest Income Recognized During Impairment
Interest Income Recognized for the Period	2	1
Commercial construction
Recorded investment
With no valuation reserve	369
Total	369
Unpaid Principal Balance	473
Average investment
Average Balance for the Period	185
Interest Income Recognized During Impairment
Interest Income Recognized for the Period		3
One to four family residential real estate
Recorded investment
With no valuation reserve	1,376	1,621
Total	1,376	1,621
Unpaid Principal Balance	1,966	2,315
Average investment
Average Balance for the Period	1,499	2,057
Interest Income Recognized During Impairment
Interest Income Recognized for the Period	100	134
Consumer construction
Recorded investment
With no valuation reserve		17
Total		17
Unpaid Principal Balance		66
Average investment
Average Balance for the Period	9	37
Interest Income Recognized During Impairment
Interest Income Recognized for the Period	3
Consumer
Recorded investment
With no valuation reserve	55	21
Total	55	21
Unpaid Principal Balance	56	21
Average investment
Average Balance for the Period	38	13
Interest Income Recognized During Impairment
Interest Income Recognized for the Period	$ 1	$ 2

Number of days past due to be considered as nonperforming loans.

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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://www.xbrl.org/2003/role/presentationRef
-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

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-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 on a cash-basis method of accounting 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 investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524

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Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

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Amount of average investment of impaired financing receivables for which there is a related allowance for credit losses.

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