IMPAIRED LOANS AND ALLOWANCE FOR LOAN LOSSES - Company's Average Recorded Investments in Impaired Loans and Related Interest Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Average Recorded Investment
Total	$ 30,370	$ 32,479
Interest Income Recognized
Total	385	207
Commercial Real Estate [Member]
Average Recorded Investment
Impaired Loans with No Related Allowance Recorded	2,049	2,265
Impaired Loans with an Allowance Recorded	6,670	7,033
Total	8,719	9,298
Interest Income Recognized
Impaired Loans with No Related Allowance Recorded	39	3
Impaired Loans with an Allowance Recorded	69	74
Total	108	77
Residential Real Estate [Member]
Average Recorded Investment
Impaired Loans with No Related Allowance Recorded	9,186	9,399
Impaired Loans with an Allowance Recorded	11,759	12,263
Total	20,945	21,662
Interest Income Recognized
Impaired Loans with No Related Allowance Recorded	138	34
Impaired Loans with an Allowance Recorded	113	85
Total	251	119
Construction and Land Development [Member]
Average Recorded Investment
Impaired Loans with No Related Allowance Recorded	303	143
Impaired Loans with an Allowance Recorded	114	770
Total	417	913
Interest Income Recognized
Impaired Loans with No Related Allowance Recorded	11	0
Impaired Loans with an Allowance Recorded	3	7
Total	14	7
Commercial And Financial [Member]
Average Recorded Investment
Impaired Loans with No Related Allowance Recorded	19	17
Impaired Loans with an Allowance Recorded	118	0
Total	137	17
Interest Income Recognized
Impaired Loans with No Related Allowance Recorded	1	0
Impaired Loans with an Allowance Recorded	4	0
Total	5	4
Consumer Portfolio Segment [Member]
Average Recorded Investment
Impaired Loans with No Related Allowance Recorded	56	240
Impaired Loans with an Allowance Recorded	96	349
Total	152	589
Interest Income Recognized
Impaired Loans with No Related Allowance Recorded	4	0
Impaired Loans with an Allowance Recorded	3	4
Total	$ 7	$ 0