LOANS - Changes in allowance for loan losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Residential 1-4 family
Beginning balance	$ 1,980	$ 1,982	$ 2,149	$ 1,862
Acquisition Discount Transfer			10
Provision	95	24	(85)	154
Charge-offs	(1)		(1)	(10)
Recoveries		1	1	1
Ending balance	2,074	2,007	2,074	2,007
Residential 5+ multifamily
Beginning balance	466	216	413	155
Acquisition Discount Transfer
Provision	29	42	82	103
Charge-offs
Recoveries
Ending balance	495	258	495	258
Construction of residential 1-4 family
Beginning balance	77	74	83	75
Acquisition Discount Transfer
Provision	2	8	(4)	7
Charge-offs
Recoveries
Ending balance	79	82	79	82
Home equity lines of credit
Beginning balance	209	233	219	236
Acquisition Discount Transfer			1
Provision	15	1	4	(3)
Charge-offs
Recoveries				1
Ending balance	224	234	224	234
Residential real estate
Beginning balance	2,732	2,505	2,864	2,328
Acquisition Discount Transfer			11
Provision	141	75	(3)	236
Charge-offs	(1)		(1)	(10)
Recoveries		1	1	2
Ending balance	2,872	2,581	2,872	2,581
Commercial
Beginning balance	3,803	2,666	3,048	2,547
Acquisition Discount Transfer			488
Provision	(13)	259	262	377
Charge-offs	(14)	(149)	(23)	(150)
Recoveries	1		2	1
Ending balance	3,777	2,775	3,777	2,775
Construction of commercial
Beginning balance	143	93	122	80
Acquisition Discount Transfer
Provision	(16)	9	5	22
Charge-offs
Recoveries
Ending balance	127	102	127	102
Commercial real estate
Beginning balance	3,946	2,759	3,170	2,627
Acquisition Discount Transfer			488
Provision	(29)	268	267	399
Charge-offs	(14)	(149)	(23)	(150)
Recoveries	1		2	1
Ending balance	3,904	2,877	3,904	2,877
Farm land
Beginning balance	47	33	33	32
Acquisition Discount Transfer
Provision		4	14	5
Charge-offs
Recoveries
Ending balance	47	37	47	37
Vacant land
Beginning balance	89	131	100	131
Acquisition Discount Transfer
Provision		3	(11)	3
Charge-offs
Recoveries
Ending balance	89	134	89	134
Real estate secured
Beginning balance	6,814	5,428	6,167	5,118
Acquisition Discount Transfer			499
Provision	112	350	267	668
Charge-offs	(15)	(149)	(24)	(160)
Recoveries	1	1	3	3
Ending balance	6,912	5,629	6,912	5,629
Commercial and industrial
Beginning balance	1,233	938	1,158	984
Acquisition Discount Transfer			164
Provision	(67)	201	(127)	159
Charge-offs	(19)		(50)	(10)
Recoveries	29	5	31	11
Ending balance	1,176	1,144	1,176	1,144
Municipal
Beginning balance	14	30	12	30
Acquisition Discount Transfer
Provision	16	(1)	18	(1)
Charge-offs
Recoveries
Ending balance	30	29	30	29
Consumer
Beginning balance	51	61	56	81
Acquisition Discount Transfer
Provision	40	3	37	14
Charge-offs	(18)	(6)	(24)	(45)
Recoveries	8	5	12	13
Ending balance	81	63	81	63
Unallocated
Beginning balance	638	601	438	563
Acquisition Discount Transfer
Provision	50	(86)	250	(47)
Charge-offs
Recoveries
Ending balance	688	516	688	516
Totals
Beginning balance	8,750	7,058	7,831	6,776
Acquisition Discount Transfer			663
Provision	151	467	445	793
Charge-offs	(52)	(155)	(98)	(215)
Recoveries	38	11	46	27
Ending balance	$ 8,887	$ 7,381	$ 8,887	$ 7,381