LOANS AND ALLOWANCE FOR LOAN LOSSES (Schedule of Credit Risk Exposure Indicators by Portfolio Segment) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 1,602,559	$ 1,563,866	$ 1,536,464
Residential real estate loans
Financing Receivable, Recorded Investment [Line Items]
Loans	569,521	572,173	569,823
Residential real estate loans | Pass (Grades 1-6)
Financing Receivable, Recorded Investment [Line Items]
Loans	553,040	555,444
Residential real estate loans | Special Mention (Grade 7)
Financing Receivable, Recorded Investment [Line Items]
Loans	2,771	1,291
Residential real estate loans | Substandard (Grade 8)
Financing Receivable, Recorded Investment [Line Items]
Loans	13,710	15,438
Commercial real estate loans
Financing Receivable, Recorded Investment [Line Items]
Loans	522,987	506,231	496,411
Commercial real estate loans | Pass (Grades 1-6)
Financing Receivable, Recorded Investment [Line Items]
Loans	465,947	440,610
Commercial real estate loans | Special Mention (Grade 7)
Financing Receivable, Recorded Investment [Line Items]
Loans	13,400	17,069
Commercial real estate loans | Substandard (Grade 8)
Financing Receivable, Recorded Investment [Line Items]
Loans	43,640	48,552
Commercial loans
Financing Receivable, Recorded Investment [Line Items]
Loans	190,068	190,454	182,428
Commercial loans | Pass (Grades 1-6)
Financing Receivable, Recorded Investment [Line Items]
Loans	169,208	165,460
Commercial loans | Special Mention (Grade 7)
Financing Receivable, Recorded Investment [Line Items]
Loans	7,919	7,449
Commercial loans | Substandard (Grade 8)
Financing Receivable, Recorded Investment [Line Items]
Loans	12,941	17,545
Home equity loans
Financing Receivable, Recorded Investment [Line Items]
Loans	301,868	278,375	272,309
Home equity loans | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans	300,343	276,742
Home equity loans | Non-performing
Financing Receivable, Recorded Investment [Line Items]
Loans	1,525	1,633
Consumer loans
Financing Receivable, Recorded Investment [Line Items]
Loans	18,115	16,633	15,493
Consumer loans | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans	17,695	16,376
Consumer loans | Non-performing
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 420	$ 257