LOANS - Composition of loans receivable and allowance for loan losses (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Business Activities Loans - Collectively evaluated Loans
Residential 1-4 family	$ 273,585	$ 253,156
Residential 5+ multifamily	5,471	4,640
Construction of residential 1-4 family	10,343	7,998
Home equity lines credit	33,958	34,298
Residential real estate	323,357	300,092
Commercial	146,144	125,173
Construction of commercial	9,232	6,403
Commercial real estate	155,376	131,576
Farm land	3,018	2,162
Vacant land	5,080	5,486
Real estate secured	486,831	439,316
Commercial and industrial	101,024	74,131
Municipal	9,005	9,566
Consumer	5,617	6,115
Unallocated allowance
Totals	602,477	529,128
Business Activities Loans - Collectively evaluated Allowance
Residential 1-4 family	1,574	1,415
Residential 5+ multifamily	39	33
Construction of residential 1-4 family	77	65
Home equity lines credit	312	286
Residential real estate	2,002	1,799
Commercial	1,538	1,265
Construction of commercial	120	87
Commercial real estate	1,658	1,352
Farm land	25	23
Vacant land	121	122
Real estate secured	3,806	3,296
Commercial and industrial	850	673
Municipal	56	61
Consumer	89	124
Unallocated allowance	334	482
Totals	5,135	4,636
Business Activities Loans - Individually evaluated Loans
Residential 1-4 family	6,668	8,339
Residential 5+ multifamily	1,759	1,771
Construction of residential 1-4 family
Home equity lines credit	809	719
Residential real estate	9,236	10,829
Commercial	4,525	4,273
Construction of commercial	118	122
Commercial real estate	4,643	4,395
Farm land	1,018	1,031
Vacant land	3,069	3,077
Real estate secured	17,966	19,332
Commercial and industrial	85	526
Municipal
Consumer		80
Unallocated allowance
Totals	18,051	19,938
Business Activities Loans - Individually evaluated Allowance
Residential 1-4 family	230	610
Residential 5+ multifamily
Construction of residential 1-4 family
Home equity lines credit	16	68
Residential real estate	246	678
Commercial	76	113
Construction of commercial		1
Commercial real estate	76	114
Farm land	6	14
Vacant land	14	29
Real estate secured	342	835
Commercial and industrial	1	10
Municipal
Consumer
Unallocated allowance
Totals	343	845
Business Activities Loans - Total portfolio Loans
Residential 1-4 family	280,253	261,495
Residential 5+ multifamily	7,230	6,411
Construction of residential 1-4 family	10,343	7,998
Home equity lines credit	34,767	35,017
Residential real estate	332,593	310,921
Commercial	150,669	129,446
Construction of commercial	9,350	6,525
Commercial real estate	160,019	135,971
Farm land	4,036	3,193
Vacant land	8,149	8,563
Real estate secured	504,797	458,648
Commercial and industrial	101,109	74,657
Municipal	9,005	9,566
Consumer	5,617	6,195
Unallocated allowance
Totals	620,528	549,066
Business Activities Loans - Total portfolio Allowance
Residential 1-4 family	1,804	2,025
Residential 5+ multifamily	39	33
Construction of residential 1-4 family	77	65
Home equity lines credit	328	354
Residential real estate	2,248	2,477
Commercial	1,614	1,378
Construction of commercial	120	88
Commercial real estate	1,734	1,466
Farm land	31	37
Vacant land	135	151
Real estate secured	4,418	4,131
Commercial and industrial	851	683
Municipal	56	61
Consumer	89	124
Unallocated allowance	334	482
Totals	5,478	5,481
Acquired Loans - Collectively evaluated Loans
Residential 1-4 family	6,470	7,023
Residential 5+ multifamily	5,837	6,136
Construction of residential 1-4 family
Home equity lines credit
Residential real estate	12,307	13,159
Commercial	77,041	81,300
Construction of commercial	3,852	4,612
Commercial real estate	80,893	85,912
Farm land
Vacant land
Real estate secured	93,200	99,071
Commercial and industrial	31,592	45,650
Municipal
Consumer	52	61
Unallocated allowance
Totals	124,844	144,782
Acquired Loans - Collectively evaluated Allowance
Residential 1-4 family
Residential 5+ multifamily
Construction of residential 1-4 family
Home equity lines credit
Residential real estate
Commercial	24	19
Construction of commercial	3	4
Commercial real estate	27	23
Farm land
Vacant land
Real estate secured	27	23
Commercial and industrial	27	24
Municipal
Consumer
Unallocated allowance
Totals	54	47
Acquired Loans - Individually evaluated Loans
Residential 1-4 family	779	776
Residential 5+ multifamily	123
Construction of residential 1-4 family
Home equity lines credit
Residential real estate	902	776
Commercial	2,291	2,742
Construction of commercial	258	262
Commercial real estate	2,549	3,004
Farm land
Vacant land
Real estate secured	3,451	3,780
Commercial and industrial
Municipal
Consumer
Unallocated allowance
Totals	3,451	3,780
Acquired Loans - Individually evaluated Allowance
Residential 1-4 family	69	79
Residential 5+ multifamily
Construction of residential 1-4 family
Home equity lines credit
Residential real estate	69	79
Commercial	26	107
Construction of commercial
Commercial real estate	26	107
Farm land
Vacant land
Real estate secured	95	186
Commercial and industrial
Municipal
Consumer
Unallocated allowance
Totals	95	186
Acquired Loans - ASC 310-30 Loans
Residential 1-4 family
Residential 5+ multifamily
Construction of residential 1-4 family
Home equity lines credit
Residential real estate
Commercial	4,783	4,787
Construction of commercial
Commercial real estate	4,783	4,787
Farm land
Vacant land
Real estate secured	4,783	4,787
Commercial and industrial	349	1,114
Municipal
Consumer	16	16
Unallocated allowance
Totals	5,148	5,917
Acquired Loans - ASC 310-30 loans Allowance
Residential 1-4 family
Residential 5+ multifamily
Construction of residential 1-4 family
Home equity lines credit
Residential real estate
Commercial	81	2
Construction of commercial
Commercial real estate	81	2
Farm land
Vacant land
Real estate secured	81	2
Commercial and industrial	10
Municipal
Consumer
Unallocated allowance
Totals	91	2
Acquired Loans - Total portfolio Loans
Residential 1-4 family	7,249	7,799
Residential 5+ multifamily	5,960	6,136
Construction of residential 1-4 family
Home equity lines credit
Residential real estate	13,209	13,935
Commercial	84,115	88,829
Construction of commercial	4,110	4,874
Commercial real estate	88,225	93,703
Farm land
Vacant land
Real estate secured	101,434	107,638
Commercial and industrial	31,941	46,764
Municipal
Consumer	68	77
Unallocated allowance
Totals	133,443	154,479
Acquired Loans - Total portfolio Allowance
Residential 1-4 family	69	79
Residential 5+ multifamily
Construction of residential 1-4 family
Home equity lines credit
Residential real estate	69	79
Commercial	131	128
Construction of commercial	3	4
Commercial real estate	134	132
Farm land
Vacant land
Real estate secured	203	211
Commercial and industrial	37	24
Municipal
Consumer
Unallocated allowance
Totals	$ 240	$ 235