LOANS, Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Allowance for credit losses [Roll Forward]
Beginning balance	$ 12,746	$ 11,715	$ 12,822	$ 11,133	$ 11,133
Provision for loan losses	0	525	0	1,050	2,100
Charge-offs	(8)	(480)	(165)	(486)	(685)
Recoveries	100	47	181	110	274
Net (charge-offs) recoveries	92	(433)	16	(376)	(411)
Ending balance	12,838	11,807	12,838	11,807	12,822
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	281	446	281	446	855
Loans collectively evaluated for impairment	12,557	11,361	12,557	11,361	11,967
Ending balance	12,838	11,807	12,838	11,807	12,822
Loans individually and collectively evaluated for impairment [Abstract]
Loans individually evaluated for impairment	4,878	7,125	4,878	7,125	10,874
Loans collectively evaluated for impairment	738,768	734,534	738,768	734,534	764,620
Ending balance	743,646	741,659	743,646	741,659	775,494
Commercial [Member]
Allowance for credit losses [Roll Forward]
Beginning balance	2,499	2,549	3,198	2,625	2,625
Provision for loan losses	(191)	654	(759)	569	1,036
Charge-offs	0	(475)	(150)	(475)	(509)
Recoveries	64	36	83	45	46
Net (charge-offs) recoveries	64	(439)	(67)	(430)	(463)
Ending balance	2,372	2,764	2,372	2,764	3,198
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	32	45	32	45	496
Loans collectively evaluated for impairment	2,340	2,719	2,340	2,719	2,702
Ending balance	2,372	2,764	2,372	2,764	3,198
Loans individually and collectively evaluated for impairment [Abstract]
Loans individually evaluated for impairment	2,347	2,535	2,347	2,535	2,902
Loans collectively evaluated for impairment	108,695	128,936	108,695	128,936	122,275
Ending balance	111,042	131,471	111,042	131,471	125,177
Commercial Real Estate [Member]
Allowance for credit losses [Roll Forward]
Beginning balance	6,386	5,414	5,890	5,460	5,460
Provision for loan losses	43	(30)	539	(76)	572
Charge-offs	0	0	0	0	(142)
Recoveries	0	0	0	0	0
Net (charge-offs) recoveries	0	0	0	0	(142)
Ending balance	6,429	5,384	6,429	5,384	5,890
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	20	35	20	35	21
Loans collectively evaluated for impairment	6,409	5,349	6,409	5,349	5,869
Ending balance	6,429	5,384	6,429	5,384	5,890
Loans individually and collectively evaluated for impairment [Abstract]
Loans individually evaluated for impairment	603	1,922	603	1,922	642
Loans collectively evaluated for impairment	421,460	390,151	421,460	390,151	419,464
Ending balance	422,063	392,073	422,063	392,073	420,106
Agriculture [Member]
Allowance for credit losses [Roll Forward]
Beginning balance	1,834	1,423	1,632	1,547	1,547
Provision for loan losses	79	112	281	(12)	85
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0	0
Net (charge-offs) recoveries	0	0	0	0	0
Ending balance	1,913	1,535	1,913	1,535	1,632
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	0	0	0	0	0
Loans collectively evaluated for impairment	1,913	1,535	1,913	1,535	1,632
Ending balance	1,913	1,535	1,913	1,535	1,632
Loans individually and collectively evaluated for impairment [Abstract]
Loans individually evaluated for impairment	0	0	0	0	4,830
Loans collectively evaluated for impairment	109,440	112,457	109,440	112,457	118,796
Ending balance	109,440	112,457	109,440	112,457	123,626
Residential Mortgage [Member]
Allowance for credit losses [Roll Forward]
Beginning balance	502	643	643	628	628
Provision for loan losses	(82)	(28)	(279)	(29)	(19)
Charge-offs	0	0	0	0	0
Recoveries	16	4	72	20	34
Net (charge-offs) recoveries	16	4	72	20	34
Ending balance	436	619	436	619	643
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	179	304	179	304	287
Loans collectively evaluated for impairment	257	315	257	315	356
Ending balance	436	619	436	619	643
Loans individually and collectively evaluated for impairment [Abstract]
Loans individually evaluated for impairment	1,015	1,585	1,015	1,585	1,551
Loans collectively evaluated for impairment	55,093	44,182	55,093	44,182	49,513
Ending balance	56,108	45,767	56,108	45,767	51,064
Residential Construction [Member]
Allowance for credit losses [Roll Forward]
Beginning balance	217	348	318	360	360
Provision for loan losses	(41)	12	(143)	(1)	(173)
Charge-offs	0	0	0	0	0
Recoveries	20	1	21	2	131
Net (charge-offs) recoveries	20	1	21	2	131
Ending balance	196	361	196	361	318
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	48	58	48	58	49
Loans collectively evaluated for impairment	148	303	148	303	269
Ending balance	196	361	196	361	318
Loans individually and collectively evaluated for impairment [Abstract]
Loans individually evaluated for impairment	711	637	711	637	560
Loans collectively evaluated for impairment	14,818	22,057	14,818	22,057	19,564
Ending balance	15,529	22,694	15,529	22,694	20,124
Consumer [Member]
Allowance for credit losses [Roll Forward]
Beginning balance	277	305	279	342	342
Provision for loan losses	(6)	0	(6)	(68)	(92)
Charge-offs	(8)	(5)	(15)	(11)	(34)
Recoveries	0	6	5	43	63
Net (charge-offs) recoveries	(8)	1	(10)	32	29
Ending balance	263	306	263	306	279
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	2	4	2	4	2
Loans collectively evaluated for impairment	261	302	261	302	277
Ending balance	263	306	263	306	279
Loans individually and collectively evaluated for impairment [Abstract]
Loans individually evaluated for impairment	202	446	202	446	389
Loans collectively evaluated for impairment	29,262	36,751	29,262	36,751	35,008
Ending balance	29,464	37,197	29,464	37,197	35,397
Unallocated [Member]
Allowance for credit losses [Roll Forward]
Beginning balance	1,031	1,033	862	171	171
Provision for loan losses	198	(195)	367	667	691
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0	0
Net (charge-offs) recoveries	0	0	0	0	0
Ending balance	1,229	838	1,229	838	862
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	0	0	0	0	0
Loans collectively evaluated for impairment	1,229	838	1,229	838	862
Ending balance	$ 1,229	$ 838	$ 1,229	$ 838	$ 862