LOANS AND THE ALLOWANCE FOR CREDIT LOSSES - Allowance for Loan Losses and Recorded Investment in Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Loan loss experience and activity in allowance for loan losses
Ending balance individually evaluated for impairment	$ 184	$ 137
Ending balance collectively evaluated for impairment	12,475	11,903
Total allowance for credit losses	12,659	12,040	$ 11,833	$ 12,042
Financing receivables, Ending balance individually evaluated for impairment	2,956	1,970
Financing receivables, Ending balance collectively evaluated for impairment	1,508,607	1,409,072
Total	1,514,209	1,414,280
Receivables acquired with deteriorated credit quality
Loan loss experience and activity in allowance for loan losses
Total	2,646	3,238
Commercial, financial and agricultural
Loan loss experience and activity in allowance for loan losses
Ending balance collectively evaluated for impairment	2,946	2,696
Total allowance for credit losses	2,946	2,696	2,583	2,740
Financing receivables, Ending balance individually evaluated for impairment	97	595
Financing receivables, Ending balance collectively evaluated for impairment	256,239	235,652
Total	257,078	237,451
Commercial, financial and agricultural \| Receivables acquired with deteriorated credit quality
Loan loss experience and activity in allowance for loan losses
Total	742	1,204
Municipal
Loan loss experience and activity in allowance for loan losses
Ending balance collectively evaluated for impairment	593	590
Total allowance for credit losses	593	590	623	758
Financing receivables, Ending balance collectively evaluated for impairment	114,509	105,421
Total	114,509	105,421
Real estate loans - residential
Loan loss experience and activity in allowance for loan losses
Ending balance individually evaluated for impairment	184	137
Ending balance collectively evaluated for impairment	2,391	2,745
Total allowance for credit losses	2,575	2,882	3,038	2,995
Financing receivables, Ending balance individually evaluated for impairment	1,213	706
Financing receivables, Ending balance collectively evaluated for impairment	446,314	467,737
Total	447,527	468,443
Real estate loans - commercial
Loan loss experience and activity in allowance for loan losses
Ending balance collectively evaluated for impairment	5,922	5,386
Total allowance for credit losses	5,922	5,386	5,209	5,040
Financing receivables, Ending balance individually evaluated for impairment	1,634	647
Financing receivables, Ending balance collectively evaluated for impairment	633,217	555,323
Total	636,755	558,004
Real estate loans - commercial \| Receivables acquired with deteriorated credit quality
Loan loss experience and activity in allowance for loan losses
Total	1,904	2,034
Real estate loans - construction
Loan loss experience and activity in allowance for loan losses
Ending balance collectively evaluated for impairment	534	420
Total allowance for credit losses	534	420	325	481
Financing receivables, Ending balance collectively evaluated for impairment	52,533	34,802
Total	52,533	34,802
Installment
Loan loss experience and activity in allowance for loan losses
Ending balance collectively evaluated for impairment	89	66
Total allowance for credit losses	89	66	13	18
Financing receivables, Ending balance individually evaluated for impairment	12	22
Financing receivables, Ending balance collectively evaluated for impairment	5,778	10,093
Total	5,790	10,115
All other loans
Loan loss experience and activity in allowance for loan losses
Total allowance for credit losses			$ 42	$ 10
Financing receivables, Ending balance collectively evaluated for impairment	17	44
Total	$ 17	$ 44

A valuation allowance for financing receivables that are expected to be uncollectible.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

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The balance of financing receivables that were collectively evaluated for impairment.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Topic 310
-SubTopic 10
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-Subparagraph (h)
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

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