LOANS - Composition of loans receivable and loans held-for-sale (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Business Activites Loans
Residential 1-4 family	$ 304,711	$ 295,030
Residential 5+ multifamily	11,904	7,976
Construction of residential 1-4 family	11,582	10,951
Home equity lines of credit	35,529	35,487
Residential real estate	363,726	349,444
Commercial	180,055	155,628
Construction of commercial	8,444	3,481
Commercial real estate	181,039	159,109
Farm land	4,692	3,914
Vacant land	7,464	6,600
Real estate secured	564,381	519,067
Commercial and industrial	114,447	121,144
Municipal	12,499	8,626
Consumer	4,851	5,312
Loans receivable, gross	696,178	654,149
Deferred loan origination fees and costs, net	1,285	1,247
Allowance for loan losses	(6,280)	(5,816)
Loans receivable, net	691,183	649,580
Loans held-for-sale
Residential 1-4 family	561
Acquired Loans
Residential 1-4 family	5,626	6,098
Residential 5+ multifamily	5,251	5,649
Construction of residential 1-4 family
Home equity lines of credit
Residential real estate	10,877	11,747
Commercial	67,306	79,854
Construction of commercial	809	1,917
Commercial real estate	71,870	81,771
Farm land
Vacant land
Real estate secured	78,992	93,518
Commercial and industrial	14,126	20,329
Municipal
Consumer	49	68
Loans receivable, gross	93,167	113,915
Deferred loan origination fees and costs, net
Allowance for loan losses	(214)	(311)
Loans receivable, net	92,953	113,604
Loans held-for-sale
Residential 1-4 family
Total
Residential 1-4 family	310,337	301,128
Residential 5+ multifamily	17,155	13,625
Construction of residential 1-4 family	11,582	10,951
Home equity lines of credit	35,529	35,487
Residential real estate	374,603	361,191
Commercial	247,361	235,482
Construction of commercial	9,253	5,398
Commercial real estate	252,909	240,880
Farm land	4,692	3,914
Vacant land	7,464	6,600
Real estate secured	643,373	612,585
Commercial and industrial	128,573	141,473
Municipal	12,499	8,626
Consumer	4,900	5,380
Loans receivable, gross	789,345	768,064
Deferred loan origination fees and costs, net	1,285	1,247
Allowance for loan losses	(6,494)	(6,127)
Loans receivable, net	784,136	763,184
Loans held-for-sale
Residential 1-4 family	$ 561