LOANS AND THE ALLOWANCE FOR CREDIT LOSSES - Composition of Loan Portfolio (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment
Total Loans	$ 1,421,603	$ 1,414,280
Net deferred loan origination fees	1,220	1,200
Overdrawn deposit balances classified as loan balances	291	308
Commercial, financial and agricultural
Financing Receivable, Recorded Investment
Total Loans	247,074	237,451
Municipal
Financing Receivable, Recorded Investment
Total Loans	105,433	105,421
Real estate loans - residential
Financing Receivable, Recorded Investment
Total Loans	461,009	468,443
Real estate loans - commercial
Financing Receivable, Recorded Investment
Total Loans	556,836	558,004
Real estate loans - construction
Financing Receivable, Recorded Investment
Total Loans	42,209	34,802
Installment
Financing Receivable, Recorded Investment
Total Loans	9,009	10,115
All other loans
Financing Receivable, Recorded Investment
Total Loans	$ 33	$ 44

The net increase(decrease) in interest income during the period representing the allocation of deferred loan origination fees less deferred loan origination costs using the effective interest method over the term of the debt arrangement to which they pertain taking into account the effect of prepayments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.1)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Direct Loan Origination Costs
-URI http://asc.fasb.org/extlink&oid=6510860

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 20
-Section 30
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6378273&loc=d3e8446-111530

Reference 5: http://www.xbrl.org/2003/role/presentationRef
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Amount of deposits held by the entity that have been reclassified as loan balances receivable, for example, but not limited to, overdrafts receivable.

+ References

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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