LOAN CREDIT QUALITY AND RELATED ALLOWANCE FOR LOAN LOSSES - Average Recorded Investment in Impaired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Investment in Impaired Loans	$ 21,995	$ 14,081	$ 13,375
Interest Income Recognized on an Accrual Basis on Impaired Loans	436	219	272
Interest Income Recognized on a Cash Basis on Impaired Loans	190	235	689
Commercial, Financial, and Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Investment in Impaired Loans	1,031	763	538
Interest Income Recognized on an Accrual Basis on Impaired Loans	21	26	26
Interest Income Recognized on a Cash Basis on Impaired Loans	10	25	0
Residential Real Estate Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Investment in Impaired Loans	2,570	1,245	1,581
Interest Income Recognized on an Accrual Basis on Impaired Loans	72	46	62
Interest Income Recognized on a Cash Basis on Impaired Loans	47	20	25
Commercial Real Estate Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Investment in Impaired Loans	17,529	10,987	8,605
Interest Income Recognized on an Accrual Basis on Impaired Loans	342	130	183
Interest Income Recognized on a Cash Basis on Impaired Loans	80	101	95
Construction Real Estate Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Investment in Impaired Loans	865	1,086	2,651
Interest Income Recognized on an Accrual Basis on Impaired Loans	1	17	1
Interest Income Recognized on a Cash Basis on Impaired Loans	$ 53	$ 89	$ 569