LOANS AND ALLOWANCE FOR LOAN LOSSES (Schedule of Credit Risk Exposure Indicators by Portfolio Segment) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 1,830,143	$ 1,772,610	$ 1,726,227
Pass (Grades 1-6)
Financing Receivable, Recorded Investment [Line Items]
Loans	1,468,877	1,423,906
Performing
Financing Receivable, Recorded Investment [Line Items]
Loans	296,784	286,954
Special Mention (Grade 7)
Financing Receivable, Recorded Investment [Line Items]
Loans	21,169	14,292
Substandard (Grade 8)
Financing Receivable, Recorded Investment [Line Items]
Loans	42,070	45,446
Non-performing
Financing Receivable, Recorded Investment [Line Items]
Loans	1,243	2,012
Residential Real Estate
Financing Receivable, Recorded Investment [Line Items]
Loans	583,076	585,468	577,098
Residential Real Estate | Pass (Grades 1-6)
Financing Receivable, Recorded Investment [Line Items]
Loans	573,229	572,589
Residential Real Estate | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Residential Real Estate | Special Mention (Grade 7)
Financing Receivable, Recorded Investment [Line Items]
Loans	2,599	3,579
Residential Real Estate | Substandard (Grade 8)
Financing Receivable, Recorded Investment [Line Items]
Loans	7,248	9,300
Residential Real Estate | Non-performing
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Loans	690,935	640,661	613,510
Commercial Real Estate | Pass (Grades 1-6)
Financing Receivable, Recorded Investment [Line Items]
Loans	647,831	606,387
Commercial Real Estate | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Commercial Real Estate | Special Mention (Grade 7)
Financing Receivable, Recorded Investment [Line Items]
Loans	12,689	4,690
Commercial Real Estate | Substandard (Grade 8)
Financing Receivable, Recorded Investment [Line Items]
Loans	30,415	29,584
Commercial Real Estate | Non-performing
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Commercial
Financing Receivable, Recorded Investment [Line Items]
Loans	258,105	257,515	245,612
Commercial | Pass (Grades 1-6)
Financing Receivable, Recorded Investment [Line Items]
Loans	247,817	244,930
Commercial | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Commercial | Special Mention (Grade 7)
Financing Receivable, Recorded Investment [Line Items]
Loans	5,881	6,023
Commercial | Substandard (Grade 8)
Financing Receivable, Recorded Investment [Line Items]
Loans	4,407	6,562
Commercial | Non-performing
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Home Equity
Financing Receivable, Recorded Investment [Line Items]
Loans	281,492	271,709	271,858
Home Equity | Pass (Grades 1-6)
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Home Equity | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans	280,455	269,968
Home Equity | Special Mention (Grade 7)
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Home Equity | Substandard (Grade 8)
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Home Equity | Non-performing
Financing Receivable, Recorded Investment [Line Items]
Loans	1,037	1,741
Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans	16,535	17,257	$ 18,149
Consumer | Pass (Grades 1-6)
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Consumer | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans	16,329	16,986
Consumer | Special Mention (Grade 7)
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Consumer | Substandard (Grade 8)
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Consumer | Non-performing
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 206	$ 271