LOANS - Composition of loans receivable and loans held-for-sale (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Business Activites Loans
Residential 1-4 family	$ 295,030	$ 261,495
Residential 5+ multifamily	7,976	6,411
Construction of residential 1-4 family	10,951	7,998
Home equity lines of credit	35,487	35,017
Residential real estate	349,444	310,921
Commercial	155,628	129,446
Construction of commercial	3,481	6,525
Commercial real estate	159,109	135,971
Farm land	3,914	3,193
Vacant land	6,600	8,563
Real estate secured	519,067	458,648
Commercial and industrial	121,144	74,657
Municipal	8,626	9,566
Consumer	5,312	6,195
Loans receivable, gross	654,149	549,066
Deferred loan origination fees and costs, net	1,247	1,189
Allowance for loan losses	(5,816)	(5,481)
Loans receivable, net	649,580	544,774
Loans held-for-sale
Residential 1-4 family		763
Acquired Loans
Residential 1-4 family	6,098	7,799
Residential 5+ multifamily	5,649	6,136
Construction of residential 1-4 family
Home equity lines of credit
Residential real estate	11,747	13,935
Commercial	79,854	88,829
Construction of commercial	1,917	4,874
Commercial real estate	81,771	93,703
Farm land
Vacant land
Real estate secured	93,518	107,638
Commercial and industrial	20,329	46,764
Municipal
Consumer	68	77
Loans receivable, gross	113,915	154,479
Deferred loan origination fees and costs, net
Allowance for loan losses	(311)	(235)
Loans receivable, net	113,604	154,244
Loans held-for-sale
Residential 1-4 family
Total
Residential 1-4 family	301,128	269,294
Residential 5+ multifamily	13,625	12,547
Construction of residential 1-4 family	10,951	7,998
Home equity lines of credit	35,487	35,017
Residential real estate	361,191	324,856
Commercial	235,482	218,275
Construction of commercial	5,398	11,399
Commercial real estate	240,880	229,674
Farm land	3,914	3,193
Vacant land	6,600	8,563
Real estate secured	612,585	566,286
Commercial and industrial	141,473	121,421
Municipal	8,626	9,566
Consumer	5,380	6,272
Loans receivable, gross	768,064	703,545
Deferred loan origination fees and costs, net	1,247	1,189
Allowance for loan losses	(6,127)	(5,716)
Loans receivable, net	763,184	699,018
Loans held-for-sale
Residential 1-4 family		$ 763