LOANS - IMPAIRED LOANS AND EFFECT ON INTEREST INCOME (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Impaired Loans
Number of days past due to be considered as nonperforming loans	90 days
Recorded investment
With no valuation reserve	$ 3,170	$ 6,087
With a valuation reserve	682	670
Total	3,852	6,757
Unpaid Principal Balance	6,054	9,002
Related Allowance for Loan Losses	334	321
Average investment
Average Balance for the Period	5,137	7,896	$ 5,404
Interest Income Recognized During Impairment
Interest Income Recognized for the Period	281	370	370
Commercial real estate
Recorded investment
With no valuation reserve	1,511	3,234
With a valuation reserve	516	345
Total	2,027	3,579
Unpaid Principal Balance	3,326	4,700
Related Allowance for Loan Losses	168	70
Average investment
Average Balance for the Period	2,784	3,848	2,656
Interest Income Recognized During Impairment
Interest Income Recognized for the Period		178	232
Commercial, financial, and agricultural
Recorded investment
With a valuation reserve	166	325
Total	166	325
Unpaid Principal Balance	326	400
Related Allowance for Loan Losses	166	251
Average investment
Average Balance for the Period	246	200	628
Interest Income Recognized During Impairment
Interest Income Recognized for the Period	141,000	4	9
Commercial construction
Interest Income Recognized During Impairment
Interest Income Recognized for the Period	1
One to four family residential real estate
Recorded investment
With no valuation reserve	1,621	2,792
Total	1,621	2,792
Unpaid Principal Balance	2,315	3,794
Average investment
Average Balance for the Period	2,057	3,794	2,120
Interest Income Recognized During Impairment
Interest Income Recognized for the Period	3	182	$ 129
Consumer construction
Recorded investment
With no valuation reserve	17	57
Total	17	57
Unpaid Principal Balance	66	80
Average investment
Average Balance for the Period	37	40
Interest Income Recognized During Impairment
Interest Income Recognized for the Period	134	4
Consumer
Recorded investment
With no valuation reserve	21	4
Total	21	4
Unpaid Principal Balance	21	28
Average investment
Average Balance for the Period	13	14
Interest Income Recognized During Impairment
Interest Income Recognized for the Period	$ 2	$ 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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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-Section 50
-Paragraph 14A
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-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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