LOANS AND ALLOWANCE FOR LOAN LOSSES (Summary of Impaired Loan Balances and Associated Allowance by Portfolio Segment) (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 30, 2015		Sep. 30, 2014		Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Recorded Investment - with an allowance recorded	$ 9,361		$ 15,792		$ 9,361	$ 15,792	$ 14,186
Unpaid Principal Balance - with an allowance recorded	9,394		15,792		9,394	15,792	14,186
Related Allowance	1,865		2,447		1,865	2,447	2,239
Average Recorded Investment - with an allowance recorded	12,757		16,921		11,409	20,132	18,804
Interest Income Recognized - with an allowance recorded	60		37		88	112	133
Recorded Investment - without allowance recorded	5,812		7,431		5,812	7,431	6,993
Unpaid Principal Balance - without allowance recorded	6,915		8,828		6,915	8,828	8,330
Average Recorded Investment - without allowance recorded	5,699		6,531		5,316	5,611	6,337
Interest Income Recognized - without allowance recorded	26		22		59	56	83
Impaired Financing Receivable, Recorded Investment	15,173		23,223		15,173	23,223	21,179
Impaired financing receivable, unpaid principal balance	16,309		24,620		16,309	24,620	22,516
Impaired Financing Receivable, Average Recorded Investment	18,456		23,452		16,725	25,743	25,141
Impaired Financing Receivable, Interest Income, Accrual Method	86	[1]	59	[1]	147	168	216
Residential Real Estate
Financing Receivable, Impaired [Line Items]
Recorded Investment - with an allowance recorded	5,880		9,441		5,880	9,441	7,713
Unpaid Principal Balance - with an allowance recorded	5,880		9,441		5,880	9,441	7,713
Related Allowance	956		1,420		956	1,420	1,220
Average Recorded Investment - with an allowance recorded	7,618		9,236		6,963	9,928	9,524
Interest Income Recognized - with an allowance recorded	55		38		82	102	125
Recorded Investment - without allowance recorded	1,619		1,523		1,619	1,523	1,943
Unpaid Principal Balance - without allowance recorded	2,118		1,880		2,118	1,880	2,604
Average Recorded Investment - without allowance recorded	1,774		1,751		1,607	2,340	2,257
Interest Income Recognized - without allowance recorded	4		2		6	5	13
Commercial Real Estate
Financing Receivable, Impaired [Line Items]
Recorded Investment - with an allowance recorded	1,442		2,987		1,442	2,987	3,419
Unpaid Principal Balance - with an allowance recorded	1,475		2,987		1,475	2,987	3,419
Related Allowance	352		222		352	222	251
Average Recorded Investment - with an allowance recorded	2,161		3,142		1,930	5,588	4,911
Interest Income Recognized - with an allowance recorded			1			2
Recorded Investment - without allowance recorded	3,269		3,723		3,269	3,723	4,239
Unpaid Principal Balance - without allowance recorded	3,430		4,116		3,430	4,116	4,502
Average Recorded Investment - without allowance recorded	3,102		3,490		2,735	2,230	2,869
Interest Income Recognized - without allowance recorded	18		14		45	43	59
Commercial
Financing Receivable, Impaired [Line Items]
Recorded Investment - with an allowance recorded	1,016		1,562		1,016	1,562	1,390
Unpaid Principal Balance - with an allowance recorded	1,016		1,562		1,016	1,562	1,390
Related Allowance	192		121		192	121	168
Average Recorded Investment - with an allowance recorded	1,320		2,724		1,188	2,653	2,466
Interest Income Recognized - with an allowance recorded	5		(2)		6	8	8
Recorded Investment - without allowance recorded	704		1,818		704	1,818	463
Unpaid Principal Balance - without allowance recorded	876		2,318		876	2,318	606
Average Recorded Investment - without allowance recorded	503		870		567	609	791
Interest Income Recognized - without allowance recorded	4		6		8	8	11
Home Equity
Financing Receivable, Impaired [Line Items]
Recorded Investment - with an allowance recorded	834		1,510		834	1,510	1,410
Unpaid Principal Balance - with an allowance recorded	834		1,510		834	1,510	1,410
Related Allowance	276		573		276	573	496
Average Recorded Investment - with an allowance recorded	1,410		1,486		1,099	1,571	1,545
Recorded Investment - without allowance recorded	203		350		203	350	331
Unpaid Principal Balance - without allowance recorded	454		477		454	477	581
Average Recorded Investment - without allowance recorded	303		403		390	415	399
Consumer
Financing Receivable, Impaired [Line Items]
Recorded Investment - with an allowance recorded	189		292		189	292	254
Unpaid Principal Balance - with an allowance recorded	189		292		189	292	254
Related Allowance	89		111		89	111	104
Average Recorded Investment - with an allowance recorded	248		333		229	392	358
Recorded Investment - without allowance recorded	17		17		17	17	17
Unpaid Principal Balance - without allowance recorded	37		37		37	37	37
Average Recorded Investment - without allowance recorded	$ 17		$ 17		$ 17	$ 17	$ 21

[1] (1) Negative interest income represents the re-allocation of income between "with an allowance recorded" and "without an allowance recorded" (or vice versa) during the period.