LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES - Summary of the loan portfolio quality indicators by portfolio segment (Details 4) (Loans receivable, USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 742,084	$ 632,012
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	400,915	315,762
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	53,280	51,495
Commercial business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	107,161	94,547
Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	167,362	155,874
Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	12,833	13,497
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	533	837
Originated Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	728,605	607,907
Originated Loans | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	394,004	305,823
Originated Loans | Commercial Real Estate | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	387,877	304,469
Originated Loans | Commercial Real Estate | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,571	237
Originated Loans | Commercial Real Estate | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	4,556	1,117
Originated Loans | Commercial Real Estate | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Originated Loans | Commercial Real Estate | Loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Originated Loans | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	52,387	44,187
Originated Loans | Construction | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	52,387	44,187
Originated Loans | Construction | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Originated Loans | Construction | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Originated Loans | Construction | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Originated Loans | Construction | Loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Originated Loans | Commercial business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	105,123	92,173
Originated Loans | Commercial business | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	99,354	91,093
Originated Loans | Commercial business | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	5,191	438
Originated Loans | Commercial business | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	578	642
Originated Loans | Commercial business | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Originated Loans | Commercial business | Loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Originated Loans | Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	167,362	155,874
Originated Loans | Residential Real Estate | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	166,498	153,443
Originated Loans | Residential Real Estate | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	864	2,431
Originated Loans | Residential Real Estate | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Originated Loans | Residential Real Estate | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Originated Loans | Residential Real Estate | Loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Originated Loans | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	9,539	9,625
Originated Loans | Home equity | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	9,372	9,447
Originated Loans | Home equity | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	167	178
Originated Loans | Home equity | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Originated Loans | Home equity | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Originated Loans | Home equity | Loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Originated Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	190	225
Originated Loans | Consumer | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	190	225
Originated Loans | Consumer | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Originated Loans | Consumer | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Originated Loans | Consumer | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Originated Loans | Consumer | Loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	13,479	24,105
Acquired Loans | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	6,911	9,939
Acquired Loans | Commercial Real Estate | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	5,878	9,580
Acquired Loans | Commercial Real Estate | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		24
Acquired Loans | Commercial Real Estate | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,033	335
Acquired Loans | Commercial Real Estate | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Acquired Loans | Commercial Real Estate | Loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Acquired Loans | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	893	7,308
Acquired Loans | Construction | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		4,639
Acquired Loans | Construction | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		161
Acquired Loans | Construction | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	893	2,508
Acquired Loans | Construction | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Acquired Loans | Construction | Loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Acquired Loans | Commercial business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	2,038	2,374
Acquired Loans | Commercial business | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,138	1,806
Acquired Loans | Commercial business | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	53	252
Acquired Loans | Commercial business | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	847	316
Acquired Loans | Commercial business | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Acquired Loans | Commercial business | Loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Acquired Loans | Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Acquired Loans | Residential Real Estate | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Acquired Loans | Residential Real Estate | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Acquired Loans | Residential Real Estate | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Acquired Loans | Residential Real Estate | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Acquired Loans | Residential Real Estate | Loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Acquired Loans | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	3,294	3,872
Acquired Loans | Home equity | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	3,294	3,826
Acquired Loans | Home equity | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Acquired Loans | Home equity | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		46
Acquired Loans | Home equity | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Acquired Loans | Home equity | Loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Acquired Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	343	612
Acquired Loans | Consumer | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	343	469
Acquired Loans | Consumer | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		143
Acquired Loans | Consumer | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Acquired Loans | Consumer | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans
Acquired Loans | Consumer | Loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans