LOANS - Composition of loans receivable and allowance for loan losses (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Business Activities Loans - Collectively evaluated Loans
Residential 1-4 family	$ 253,156	$ 245,997
Residential 5+ multifamily	4,640	4,536
Construction of residential 1-4 family	7,998	2,004
Home equity lines of credit	34,298	34,231
Residential real estate	300,092	286,768
Commercial	125,173	93,784
Construction of commercial	6,403	18,474
Commercial real estate	131,576	112,258
Farm land	2,162	2,855
Vacant land	5,486	6,245
Real estate secured	439,316	408,126
Commercial and industrial	74,131	48,635
Municipal	9,566	6,083
Consumer	$ 6,115	$ 4,334
Unallocated allowance
Totals	$ 529,128	$ 467,178
Business Activities Loans - Collectively evaluated Allowance
Residential 1-4 family	1,415	1,316
Residential 5+ multifamily	33	66
Construction of residential 1-4 family	65	13
Home equity lines of credit	286	350
Residential real estate	1,799	1,745
Commercial	1,265	1,018
Construction of commercial	87	193
Commercial real estate	1,352	1,211
Farm land	23	59
Vacant land	122	67
Real estate secured	3,296	3,082
Commercial and industrial	673	532
Municipal	61	61
Consumer	124	$ 117
Unallocated allowance	482
Totals	4,636	$ 3,792
Business Activities Loans - Individually evaluated Loans
Residential 1-4 family	8,339	6,261
Residential 5+ multifamily	$ 1,771	$ 1,020
Construction of residential 1-4 family
Home equity lines of credit	$ 719	$ 396
Residential real estate	10,829	7,677
Commercial	4,273	4,714
Construction of commercial	122	128
Commercial real estate	4,395	4,842
Farm land	1,031	384
Vacant land	3,077	3,097
Real estate secured	19,332	16,000
Commercial and industrial	$ 526	$ 569
Municipal
Consumer	$ 80
Unallocated allowance
Totals	$ 19,938	$ 16,569
Business Activities Loans - Individually evaluated Allowance
Residential 1-4 family	$ 610	549
Residential 5+ multifamily		$ 3
Construction of residential 1-4 family
Home equity lines of credit	$ 68	$ 9
Residential real estate	678	561
Commercial	113	$ 486
Construction of commercial	1
Commercial real estate	114	$ 486
Farm land	14
Vacant land	29	$ 38
Real estate secured	835	1,085
Commercial and industrial	$ 10	$ 51
Municipal
Consumer
Unallocated allowance
Totals	$ 845	$ 1,136
Business Activities Loans - Total portfolio Loans
Residential 1-4 family	261,495	252,258
Residential 5+ multifamily	6,411	5,556
Construction of residential 1-4 family	7,998	2,004
Home equity lines of credit	35,017	34,627
Residential real estate	310,921	294,445
Commercial	129,446	98,498
Construction of commercial	6,525	18,602
Commercial real estate	135,971	117,100
Farm land	3,193	3,239
Vacant land	8,563	9,342
Real estate secured	458,648	424,126
Commercial and industrial	74,657	49,204
Municipal	9,566	6,083
Consumer	$ 6,195	$ 4,334
Unallocated allowance
Totals	$ 549,066	$ 483,747
Business Activities Loans - Total portfolio Allowance
Residential 1-4 family	2,025	1,865
Residential 5+ multifamily	33	69
Construction of residential 1-4 family	65	13
Home equity lines of credit	354	359
Residential real estate	2,477	2,306
Commercial	1,378	1,504
Construction of commercial	88	193
Commercial real estate	1,466	1,697
Farm land	37	59
Vacant land	151	105
Real estate secured	4,131	4,167
Commercial and industrial	683	583
Municipal	61	61
Consumer	124	117
Unallocated allowance	482	409
Totals	5,481	5,337
Acquired Loans - Collectively evaluated Loans
Residential 1-4 family	7,023	8,661
Residential 5+ multifamily	$ 6,136	$ 8,735
Construction of residential 1-4 family
Home equity lines of credit
Residential real estate	$ 13,159	$ 17,396
Commercial	81,300	89,820
Construction of commercial	4,612	9,045
Commercial real estate	$ 85,912	$ 98,865
Farm land
Vacant land
Real estate secured	$ 99,071	$ 116,261
Commercial and industrial	$ 45,650	$ 66,874
Municipal
Consumer	$ 61	$ 103
Unallocated allowance
Totals	$ 144,782	$ 183,238
Acquired Loans - Collectively evaluated Allowance
Residential 1-4 family
Residential 5+ multifamily
Construction of residential 1-4 family
Home equity lines of credit
Residential real estate
Commercial	$ 19
Construction of commercial	4	$ 7
Commercial real estate	$ 23	$ 7
Farm land
Vacant land
Real estate secured	$ 23	$ 7
Commercial and industrial	$ 24	$ 14
Municipal
Consumer
Unallocated allowance
Totals	$ 47	$ 21
Acquired Loans - Individually evaluated Loans
Residential 1-4 family	$ 776	$ 562
Residential 5+ multifamily
Construction of residential 1-4 family
Home equity lines of credit
Residential real estate	$ 776	$ 562
Commercial	2,742	$ 2,502
Construction of commercial	262
Commercial real estate	$ 3,004	$ 2,502
Farm land
Vacant land
Real estate secured	$ 3,780	$ 3,064
Commercial and industrial
Municipal
Consumer
Unallocated allowance
Totals	$ 3,780	$ 3,064
Acquired Loans - Individually evaluated Allowance
Residential 1-4 family	$ 79
Residential 5+ multifamily
Construction of residential 1-4 family
Home equity lines of credit
Residential real estate	$ 79
Commercial	$ 107
Construction of commercial
Commercial real estate	$ 107
Farm land
Vacant land
Real estate secured	$ 186
Commercial and industrial
Municipal
Consumer
Unallocated allowance
Totals	$ 186
Acquired Loans - ASC 310-30 Loans
Residential 1-4 family
Residential 5+ multifamily
Construction of residential 1-4 family
Home equity lines of credit
Residential real estate
Commercial	$ 4,787	$ 5,577
Construction of commercial
Commercial real estate	$ 4,787	$ 5,577
Farm land
Vacant land
Real estate secured	$ 4,787	$ 5,577
Commercial and industrial	$ 1,114	$ 1,840
Municipal
Consumer	$ 16	$ 19
Unallocated allowance
Totals	$ 5,917	$ 7,436
Acquired Loans - ASC 310-30 loans Allowance
Residential 1-4 family
Residential 5+ multifamily
Construction of residential 1-4 family
Home equity lines of credit
Residential real estate
Commercial	$ 2
Construction of commercial
Commercial real estate	$ 2
Farm land
Vacant land
Real estate secured	$ 2
Commercial and industrial
Municipal
Consumer
Unallocated allowance
Totals	$ 2
Acquired Loans - Total portfolio Loans
Residential 1-4 family	7,799	$ 9,223
Residential 5+ multifamily	$ 6,136	$ 8,735
Construction of residential 1-4 family
Home equity lines of credit
Residential real estate	$ 13,935	$ 17,958
Commercial	88,829	97,899
Construction of commercial	4,874	9,045
Commercial real estate	$ 93,703	$ 106,944
Farm land
Vacant land
Real estate secured	$ 107,638	$ 124,902
Commercial and industrial	$ 46,764	$ 68,714
Municipal
Consumer	$ 77	$ 122
Unallocated allowance
Totals	$ 154,479	$ 193,738
Acquired Loans - Total portfolio Allowance
Residential 1-4 family	$ 79
Residential 5+ multifamily
Construction of residential 1-4 family
Home equity lines of credit
Residential real estate	$ 79
Commercial	128
Construction of commercial	4	$ 7
Commercial real estate	$ 132	$ 7
Farm land
Vacant land
Real estate secured	$ 211	$ 7
Commercial and industrial	$ 24	$ 14
Municipal
Consumer
Unallocated allowance
Totals	$ 235	$ 21