LOANS - Changes in allowance for loan losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Business Activities Loans - Residential
Beginning balance	$ 2,482	$ 2,458	$ 2,427	$ 2,477
Provision	(94)	59	2	146
Charge-offs	(37)	(287)	(80)	(394)
Recoveries	2	18	4	19
Ending balance	2,353	2,248	2,353	2,248
Business Activities Loans - Commercial
Beginning balance	1,752	1,585	1,683	1,466
Provision	347	149	454	302
Charge-offs			(38)	(35)
Recoveries				1
Ending balance	2,099	1,734	2,099	1,734
Business Activities Loans - Land
Beginning balance	189	164	198	188
Provision	(35)	25	(29)	24
Charge-offs		(23)	(15)	(46)
Recoveries
Ending balance	154	166	154	166
Business Activities Loans - Real Estate
Beginning balance	4,423	4,207	4,308	4,131
Provision	218	233	427	472
Charge-offs	(37)	(310)	(133)	(475)
Recoveries	2	18	4	20
Ending balance	4,606	4,148	4,606	4,148
Business Activities Loans - Commercial and industrial
Beginning balance	866	781	1,043	683
Provision	162	60	(56)	185
Charge-offs	(56)		(57)	(32)
Recoveries	7	10	49	15
Ending balance	979	851	979	851
Business Activities Loans - Municipal
Beginning balance	55	59	53	61
Provision	(37)	(3)	(35)	(5)
Charge-offs
Recoveries
Ending balance	18	56	18	56
Business Activities Loans - Consumer
Beginning balance	92	114	75	124
Provision	(9)	(26)	31	(15)
Charge-offs	(15)	(7)	(46)	(30)
Recoveries	1	8	9	10
Ending balance	69	89	69	89
Business Activities Loans - Unallocated
Beginning balance	530	412	337	482
Provision	(16)	(78)	177	(148)
Charge-offs
Recoveries
Ending balance	514	334	514	334
Business Activities Loans - Totals
Beginning balance	5,966	5,573	5,816	5,481
Provision	318	186	544	489
Charge-offs	(108)	(317)	(236)	(537)
Recoveries	10	36	62	45
Ending balance	6,186	5,478	6,186	5,478
Acquired Loans - Residential
Beginning balance		69		79
Provision				(10)
Charge-offs
Recoveries
Ending balance		69		69
Acquired Loans - Commercial
Beginning balance	271	94	275	132
Provision	13	40	131	96
Charge-offs		(1)	(150)	(98)
Recoveries	1	1	29	4
Ending balance	285	134	285	134
Acquired Loans - Land
Beginning balance
Provision
Charge-offs
Recoveries
Ending balance
Acquired Loans - Real Estate
Beginning balance	271	163	275	211
Provision	13	40	131	86
Charge-offs		(1)	(150)	(98)
Recoveries	1	1	29	4
Ending balance	285	203	285	203
Acquired Loans - Commercial and industrial
Beginning balance	48	141	36	24
Provision	33	299	41	413
Charge-offs	(64)	(414)	(64)	(415)
Recoveries	5	11	9	15
Ending balance	22	37	22	37
Acquired Loans - Municipal
Beginning balance
Provision
Charge-offs
Recoveries
Ending balance
Acquired Loans - Consumer
Beginning balance
Provision
Charge-offs
Recoveries
Ending balance
Acquired Loans - Unallocated
Beginning balance
Provision
Charge-offs
Recoveries
Ending balance
Acquired Loans - Totals
Beginning balance	319	304	311	235
Provision	46	339	172	499
Charge-offs	(64)	(415)	(214)	(513)
Recoveries	6	12	38	19
Ending balance	$ 307	$ 240	$ 307	$ 240