LOANS AND ALLOWANCE FOR LOAN LOSSES (Activity in Allowance for Loan Losses by Portfolio Segment) (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Activity in ALL:
Beginning balance	$ 21,116,000	$ 21,590,000	$ 21,590,000
Loans charged off	(424,000)	(649,000)	(3,444,000)
Recoveries	133,000	237,000	746,000
Provision (reduction)	440,000	492,000	2,224,000
Ending balance	21,265,000	21,670,000	21,116,000
Ending Balance: Individually evaluated for impairment	2,233,000	3,257,000	2,239,000
Ending Balance: Collectively evaluated for impairment	19,032,000	18,413,000	18,877,000
Ending Balance: Individually evaluated for impairment	17,531,000	27,209,000	21,179,000
Ending Balance: Collectively evaluated for impairment	1,773,549,000	1,592,977,000	1,751,431,000
Total Loans Outstanding	1,791,080,000	1,620,186,000	1,772,610,000
Residential Real Estate
Activity in ALL:
Beginning balance	4,899,000	5,603,000	5,603,000
Loans charged off	(113,000)	(183,000)	(785,000)
Recoveries	3,000	92,000	165,000
Provision (reduction)	46,000	(101,000)	(84,000)
Ending balance	4,835,000	5,411,000	4,899,000
Ending Balance: Individually evaluated for impairment	1,103,000	1,628,000	1,220,000
Ending Balance: Collectively evaluated for impairment	3,732,000	3,783,000	3,679,000
Ending Balance: Individually evaluated for impairment	9,103,000	13,041,000	9,656,000
Ending Balance: Collectively evaluated for impairment	575,370,000	554,702,000	575,812,000
Total Loans Outstanding	584,473,000	567,743,000	585,468,000
Commercial Real Estate
Activity in ALL:
Beginning balance	4,482,000	4,374,000	4,374,000
Loans charged off	(55,000)	(171,000)	(361,000)
Recoveries	10,000	39,000	135,000
Provision (reduction)	324,000	286,000	334,000
Ending balance	4,761,000	4,528,000	4,482,000
Ending Balance: Individually evaluated for impairment	278,000	557,000	251,000
Ending Balance: Collectively evaluated for impairment	4,483,000	3,971,000	4,231,000
Ending Balance: Individually evaluated for impairment	4,696,000	9,339,000	7,658,000
Ending Balance: Collectively evaluated for impairment	652,765,000	565,356,000	633,003,000
Total Loans Outstanding	657,461,000	574,695,000	640,661,000
Commercial
Activity in ALL:
Beginning balance	6,823,000	6,220,000	6,220,000
Loans charged off	(159,000)	(219,000)	(1,544,000)
Recoveries	104,000	96,000	395,000
Provision (reduction)	132,000	195,000	1,752,000
Ending balance	6,900,000	6,292,000	6,823,000
Ending Balance: Individually evaluated for impairment	264,000	177,000	168,000
Ending Balance: Collectively evaluated for impairment	6,636,000	6,115,000	6,655,000
Ending Balance: Individually evaluated for impairment	1,790,000	2,372,000	1,853,000
Ending Balance: Collectively evaluated for impairment	255,973,000	188,699,000	255,662,000
Total Loans Outstanding	257,763,000	191,071,000	257,515,000
Home Equity
Activity in ALL:
Beginning balance	2,247,000	2,403,000	2,403,000
Loans charged off	(89,000)	(62,000)	(611,000)
Recoveries	5,000	3,000	19,000
Provision (reduction)	84,000	329,000	436,000
Ending balance	2,247,000	2,673,000	2,247,000
Ending Balance: Individually evaluated for impairment	488,000	754,000	496,000
Ending Balance: Collectively evaluated for impairment	1,759,000	1,919,000	1,751,000
Ending Balance: Individually evaluated for impairment	1,689,000	2,011,000	1,741,000
Ending Balance: Collectively evaluated for impairment	273,095,000	267,900,000	269,968,000
Total Loans Outstanding	274,784,000	269,911,000	271,709,000
Consumer
Activity in ALL:
Beginning balance	281,000	319,000	319,000
Loans charged off	(8,000)	(14,000)	(143,000)
Recoveries	11,000	7,000	32,000
Provision (reduction)	(14,000)	(2,000)	73,000
Ending balance	270,000	310,000	281,000
Ending Balance: Individually evaluated for impairment	100,000	141,000	104,000
Ending Balance: Collectively evaluated for impairment	170,000	169,000	177,000
Ending Balance: Individually evaluated for impairment	253,000	446,000	271,000
Ending Balance: Collectively evaluated for impairment	16,346,000	16,320,000	16,986,000
Total Loans Outstanding	16,599,000	16,766,000	17,257,000
Unallocated
Activity in ALL:
Beginning balance	2,384,000	2,671,000	2,671,000
Loans charged off	0	0	0
Recoveries	0	0	0
Provision (reduction)	(132,000)	(215,000)	(287,000)
Ending balance	2,252,000	2,456,000	2,384,000
Ending Balance: Individually evaluated for impairment	0	0	0
Ending Balance: Collectively evaluated for impairment	2,252,000	2,456,000	2,384,000
Ending Balance: Individually evaluated for impairment	0	0	0
Ending Balance: Collectively evaluated for impairment	0	0	0
Total Loans Outstanding	$ 0	$ 0	$ 0