LOANS - Composition of loans receivable and loans held-for-sale (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Business Activites Loans
Residential 1-4 family	$ 300,750	$ 295,030
Residential 5+ multifamily	11,472	7,976
Construction of residential 1-4 family	10,376	10,951
Home equity lines of credit	35,806	35,487
Residential real estate	358,404	349,444
Commercial	175,469	155,628
Construction of commercial	5,570	3,481
Commercial real estate	181,039	159,109
Farm land	4,453	3,914
Vacant land	6,969	6,600
Real estate secured	550,865	519,067
Commercial and industrial	110,424	121,144
Municipal	12,737	8,626
Consumer	4,826	5,312
Loans receivable, gross	678,852	654,149
Deferred loan origination fees and costs, net	1,200	1,247
Allowance for loan losses	(6,186)	(5,816)
Loans receivable, net	673,866	649,580
Loans held-for-sale
Residential 1-4 family	594
Acquired Loans
Residential 1-4 family	5,687	6,098
Residential 5+ multifamily	5,456	5,649
Construction of residential 1-4 family
Home equity lines of credit
Residential real estate	11,143	11,747
Commercial	70,146	79,854
Construction of commercial	1,724	1,917
Commercial real estate	71,870	81,771
Farm land
Vacant land
Real estate secured	83,013	93,518
Commercial and industrial	15,222	20,329
Municipal
Consumer	56	68
Loans receivable, gross	98,291	113,915
Deferred loan origination fees and costs, net
Allowance for loan losses	(307)	(311)
Loans receivable, net	97,984	113,604
Loans held-for-sale
Residential 1-4 family
Total
Residential 1-4 family	306,437	301,128
Residential 5+ multifamily	16,928	13,625
Construction of residential 1-4 family	10,376	10,951
Home equity lines of credit	35,806	35,487
Residential real estate	369,547	361,191
Commercial	245,615	235,482
Construction of commercial	7,294	5,398
Commercial real estate	252,909	240,880
Farm land	4,453	3,914
Vacant land	6,969	6,600
Real estate secured	633,878	612,585
Commercial and industrial	125,646	141,473
Municipal	12,737	8,626
Consumer	4,882	5,380
Loans receivable, gross	777,143	768,064
Deferred loan origination fees and costs, net	1,200	1,247
Allowance for loan losses	(6,493)	(6,127)
Loans receivable, net	771,850	763,184
Loans held-for-sale
Residential 1-4 family	$ 594