LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES - Summary, by portfolio segment and impairment methodology, of the allowance for loan losses and related portfolio (Details 3) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012
Loans collectively evaluated for impairment:
Allowance, Total	$ 9,552		$ 8,382
Loans receivable
Loans individually evaluated for impairment:
Loans individually evaluated for impairment, Portfolio	6,461		3,723
Loans individually evaluated for impairment, Allowance	39		145
Loans collectively evaluated for impairment:
Loans collectively evaluated for impairment, Portfolio	735,623		628,289
Loans collectively evaluated for impairment, Allowance	9,513		8,237
Unallocated Allowance, Portfolio
Unallocated Allowance
Portfolio, Total	742,084		632,012
Allowance, Total	9,552	8,985	8,382	8,277	8,224	7,941
Loans receivable | Residential Real Estate
Loans individually evaluated for impairment:
Loans individually evaluated for impairment, Portfolio	864		1,867
Loans individually evaluated for impairment, Allowance			73
Loans collectively evaluated for impairment:
Loans collectively evaluated for impairment, Portfolio	166,498		154,007
Loans collectively evaluated for impairment, Allowance	1,411		1,237
Portfolio, Total	167,362		155,874
Allowance, Total	1,411	1,392	1,310	1,469	1,326	1,230
Loans receivable | Commercial Real Estate
Loans individually evaluated for impairment:
Loans individually evaluated for impairment, Portfolio	2,895		1,117
Loans individually evaluated for impairment, Allowance	22		56
Loans collectively evaluated for impairment:
Loans collectively evaluated for impairment, Portfolio	398,020		314,645
Loans collectively evaluated for impairment, Allowance	4,639		3,560
Portfolio, Total	400,915		315,762
Allowance, Total	4,661	4,024	3,616	3,591	3,672	3,842
Loans receivable | Construction
Loans individually evaluated for impairment:
Loans individually evaluated for impairment, Portfolio
Loans individually evaluated for impairment, Allowance
Loans collectively evaluated for impairment:
Loans collectively evaluated for impairment, Portfolio	53,280		51,495
Loans collectively evaluated for impairment, Allowance	891		1,032
Portfolio, Total	53,280		51,495
Allowance, Total	891	776	1,032	928	1,013	929
Loans receivable | Home equity
Loans individually evaluated for impairment:
Loans individually evaluated for impairment, Portfolio	94		97
Loans individually evaluated for impairment, Allowance			4
Loans collectively evaluated for impairment:
Loans collectively evaluated for impairment, Portfolio	12,739		13,400
Loans collectively evaluated for impairment, Allowance	191		187
Portfolio, Total	12,833		13,497
Allowance, Total	191	188	190	212	213	220
Loans receivable | Commercial business
Loans individually evaluated for impairment:
Loans individually evaluated for impairment, Portfolio	2,608		642
Loans individually evaluated for impairment, Allowance	17		12
Loans collectively evaluated for impairment:
Loans collectively evaluated for impairment, Portfolio	104,553		93,905
Loans collectively evaluated for impairment, Allowance	2,374		2,212
Portfolio, Total	107,161		94,547
Allowance, Total	2,391	2,292	2,225	2,052	1,766	1,718
Loans receivable | Consumer
Loans individually evaluated for impairment:
Loans individually evaluated for impairment, Portfolio
Loans individually evaluated for impairment, Allowance
Loans collectively evaluated for impairment:
Loans collectively evaluated for impairment, Portfolio	533		837
Loans collectively evaluated for impairment, Allowance	7		9
Portfolio, Total	533		837
Allowance, Total	7	6	9	10	91	2
Loans receivable | Originated Loans
Loans individually evaluated for impairment:
Loans individually evaluated for impairment, Portfolio	5,830		3,723
Loans individually evaluated for impairment, Allowance	39		145
Loans collectively evaluated for impairment:
Loans collectively evaluated for impairment, Portfolio	722,775		604,184
Loans collectively evaluated for impairment, Allowance	9,513		8,237
Unallocated Allowance, Portfolio
Unallocated Allowance
Portfolio, Total	728,605		607,907
Allowance, Total	9,552	8,984	8,382
Loans receivable | Originated Loans | Residential Real Estate
Loans individually evaluated for impairment:
Loans individually evaluated for impairment, Portfolio	864		1,867
Loans individually evaluated for impairment, Allowance			73
Loans collectively evaluated for impairment:
Loans collectively evaluated for impairment, Portfolio	166,498		154,007
Loans collectively evaluated for impairment, Allowance	1,411		1,237
Portfolio, Total	167,362		155,874
Allowance, Total	1,411	1,392	1,310
Loans receivable | Originated Loans | Commercial Real Estate
Loans individually evaluated for impairment:
Loans individually evaluated for impairment, Portfolio	2,895		1,117
Loans individually evaluated for impairment, Allowance	22		56
Loans collectively evaluated for impairment:
Loans collectively evaluated for impairment, Portfolio	391,109		304,706
Loans collectively evaluated for impairment, Allowance	4,639		3,560
Portfolio, Total	394,004		305,823
Allowance, Total	4,661	4,024	3,616
Loans receivable | Originated Loans | Construction
Loans individually evaluated for impairment:
Loans individually evaluated for impairment, Portfolio
Loans individually evaluated for impairment, Allowance
Loans collectively evaluated for impairment:
Loans collectively evaluated for impairment, Portfolio	52,387		44,187
Loans collectively evaluated for impairment, Allowance	891		1,032
Portfolio, Total	52,387		44,187
Allowance, Total	891	776	1,032
Loans receivable | Originated Loans | Home equity
Loans individually evaluated for impairment:
Loans individually evaluated for impairment, Portfolio	94		97
Loans individually evaluated for impairment, Allowance			4
Loans collectively evaluated for impairment:
Loans collectively evaluated for impairment, Portfolio	9,445		9,528
Loans collectively evaluated for impairment, Allowance	191		187
Portfolio, Total	9,539		9,625
Allowance, Total	191	188	190
Loans receivable | Originated Loans | Commercial business
Loans individually evaluated for impairment:
Loans individually evaluated for impairment, Portfolio	1,977		642
Loans individually evaluated for impairment, Allowance	17		12
Loans collectively evaluated for impairment:
Loans collectively evaluated for impairment, Portfolio	103,146		91,531
Loans collectively evaluated for impairment, Allowance	2,374		2,212
Portfolio, Total	105,123		92,173
Allowance, Total	2,391	2,291	2,225
Loans receivable | Originated Loans | Consumer
Loans individually evaluated for impairment:
Loans individually evaluated for impairment, Portfolio
Loans individually evaluated for impairment, Allowance
Loans collectively evaluated for impairment:
Loans collectively evaluated for impairment, Portfolio	190		225
Loans collectively evaluated for impairment, Allowance	7		9
Portfolio, Total	190		225
Allowance, Total	7	6	9
Loans receivable | Acquired Loans
Loans individually evaluated for impairment:
Loans individually evaluated for impairment, Portfolio	631
Loans individually evaluated for impairment, Allowance
Loans collectively evaluated for impairment:
Loans collectively evaluated for impairment, Portfolio	12,848		24,105
Loans collectively evaluated for impairment, Allowance
Unallocated Allowance, Portfolio
Unallocated Allowance
Portfolio, Total	13,479		24,105
Allowance, Total		1
Loans receivable | Acquired Loans | Residential Real Estate
Loans individually evaluated for impairment:
Loans individually evaluated for impairment, Portfolio
Loans individually evaluated for impairment, Allowance
Loans collectively evaluated for impairment:
Loans collectively evaluated for impairment, Portfolio
Loans collectively evaluated for impairment, Allowance
Portfolio, Total
Allowance, Total
Loans receivable | Acquired Loans | Commercial Real Estate
Loans individually evaluated for impairment:
Loans individually evaluated for impairment, Portfolio
Loans individually evaluated for impairment, Allowance
Loans collectively evaluated for impairment:
Loans collectively evaluated for impairment, Portfolio	6,911		9,939
Loans collectively evaluated for impairment, Allowance
Portfolio, Total	6,911		9,939
Allowance, Total
Loans receivable | Acquired Loans | Construction
Loans individually evaluated for impairment:
Loans individually evaluated for impairment, Portfolio
Loans individually evaluated for impairment, Allowance
Loans collectively evaluated for impairment:
Loans collectively evaluated for impairment, Portfolio	893		7,308
Loans collectively evaluated for impairment, Allowance
Portfolio, Total	893		7,308
Allowance, Total
Loans receivable | Acquired Loans | Home equity
Loans individually evaluated for impairment:
Loans individually evaluated for impairment, Portfolio
Loans individually evaluated for impairment, Allowance
Loans collectively evaluated for impairment:
Loans collectively evaluated for impairment, Portfolio	3,294		3,872
Loans collectively evaluated for impairment, Allowance
Portfolio, Total	3,294		3,872
Allowance, Total
Loans receivable | Acquired Loans | Commercial business
Loans individually evaluated for impairment:
Loans individually evaluated for impairment, Portfolio	631
Loans individually evaluated for impairment, Allowance
Loans collectively evaluated for impairment:
Loans collectively evaluated for impairment, Portfolio	1,407		2,374
Loans collectively evaluated for impairment, Allowance
Portfolio, Total	2,038		2,374
Allowance, Total		1
Loans receivable | Acquired Loans | Consumer
Loans individually evaluated for impairment:
Loans individually evaluated for impairment, Portfolio
Loans individually evaluated for impairment, Allowance
Loans collectively evaluated for impairment:
Loans collectively evaluated for impairment, Portfolio	343		612
Loans collectively evaluated for impairment, Allowance
Portfolio, Total	343		612
Allowance, Total