LOANS, Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Allowance for credit losses [Roll Forward]
Beginning balance	$ 15,713	$ 12,869	$ 15,416	$ 12,356	$ 12,356
Provision for (reversal of) loan losses	0	800	300	1,450	3,050
Charge-offs	(337)	(43)	(353)	(197)	(227)
Recoveries	3	5	16	22	237
Net (charge-offs) recoveries	(334)	(38)	(337)	(175)	10
Ending balance	15,379	13,631	15,379	13,631	15,416
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	4,081	260	4,081	260	2,347
Loans collectively evaluated for impairment	11,298	13,371	11,298	13,371	13,069
Ending balance	15,379	13,631	15,379	13,631	15,416
Loans individually and collectively evaluated for impairment [Abstract]
Loans individually evaluated for impairment	17,397	19,025	17,397	19,025	17,471
Loans collectively evaluated for impairment	874,314	979,801	874,314	979,801	875,743
Ending balance	891,711	998,826	891,711	998,826	893,214
Commercial [Member]
Allowance for credit losses [Roll Forward]
Beginning balance	1,468	2,606	2,252	2,354	2,354
Provision for (reversal of) loan losses	421	(230)	(358)	156	(91)
Charge-offs	(334)	(39)	(347)	(184)	(212)
Recoveries	0	1	8	12	201
Net (charge-offs) recoveries	(334)	(38)	(339)	(172)	(11)
Ending balance	1,555	2,338	1,555	2,338	2,252
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	0	19	0	19	11
Loans collectively evaluated for impairment	1,555	2,319	1,555	2,319	2,241
Ending balance	1,555	2,338	1,555	2,338	2,252
Loans individually and collectively evaluated for impairment [Abstract]
Loans individually evaluated for impairment	28	1,473	28	1,473	1,024
Loans collectively evaluated for impairment	224,869	332,845	224,869	332,845	254,902
Ending balance	224,897	334,318	224,897	334,318	255,926
Commercial Real Estate [Member]
Allowance for credit losses [Roll Forward]
Beginning balance	7,561	7,406	7,915	6,846	6,846
Provision for (reversal of) loan losses	(223)	28	(577)	588	1,069
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0	0
Net (charge-offs) recoveries	0	0	0	0	0
Ending balance	7,338	7,434	7,338	7,434	7,915
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	0	0	0	0	0
Loans collectively evaluated for impairment	7,338	7,434	7,338	7,434	7,915
Ending balance	7,338	7,434	7,338	7,434	7,915
Loans individually and collectively evaluated for impairment [Abstract]
Loans individually evaluated for impairment	6,570	5,708	6,570	5,708	4,875
Loans collectively evaluated for impairment	476,435	453,790	476,435	453,790	449,178
Ending balance	483,005	459,498	483,005	459,498	454,053
Agriculture [Member]
Allowance for credit losses [Roll Forward]
Beginning balance	5,171	1,788	3,834	2,054	2,054
Provision for (reversal of) loan losses	88	(133)	1,425	(399)	1,780
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0	0
Net (charge-offs) recoveries	0	0	0	0	0
Ending balance	5,259	1,655	5,259	1,655	3,834
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	3,990	0	3,990	0	2,093
Loans collectively evaluated for impairment	1,269	1,655	1,269	1,655	1,741
Ending balance	5,259	1,655	5,259	1,655	3,834
Loans individually and collectively evaluated for impairment [Abstract]
Loans individually evaluated for impairment	9,130	9,145	9,130	9,145	9,130
Loans collectively evaluated for impairment	77,712	87,185	77,712	87,185	85,918
Ending balance	86,842	96,330	86,842	96,330	95,048
Residential Mortgage [Member]
Allowance for credit losses [Roll Forward]
Beginning balance	680	536	635	466	466
Provision for (reversal of) loan losses	(46)	4	(1)	74	169
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0	0
Net (charge-offs) recoveries	0	0	0	0	0
Ending balance	634	540	634	540	635
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	84	167	84	167	159
Loans collectively evaluated for impairment	550	373	550	373	476
Ending balance	634	540	634	540	635
Loans individually and collectively evaluated for impairment [Abstract]
Loans individually evaluated for impairment	669	1,067	669	1,067	1,036
Loans collectively evaluated for impairment	73,349	68,620	73,349	68,620	63,461
Ending balance	74,018	69,687	74,018	69,687	64,497
Residential Construction [Member]
Allowance for credit losses [Roll Forward]
Beginning balance	37	260	128	201	201
Provision for (reversal of) loan losses	18	(15)	(73)	44	(73)
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0	0
Net (charge-offs) recoveries	0	0	0	0	0
Ending balance	55	245	55	245	128
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	4	73	4	73	83
Loans collectively evaluated for impairment	51	172	51	172	45
Ending balance	55	245	55	245	128
Loans individually and collectively evaluated for impairment [Abstract]
Loans individually evaluated for impairment	251	671	251	671	652
Loans collectively evaluated for impairment	3,734	15,298	3,734	15,298	3,571
Ending balance	3,985	15,969	3,985	15,969	4,223
Consumer [Member]
Allowance for credit losses [Roll Forward]
Beginning balance	186	251	214	236	236
Provision for (reversal of) loan losses	0	(27)	(30)	(9)	(43)
Charge-offs	(3)	(4)	(6)	(13)	(15)
Recoveries	3	4	8	10	36
Net (charge-offs) recoveries	0	0	2	(3)	21
Ending balance	186	224	186	224	214
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	3	1	3	1	1
Loans collectively evaluated for impairment	183	223	183	223	213
Ending balance	186	224	186	224	214
Loans individually and collectively evaluated for impairment [Abstract]
Loans individually evaluated for impairment	749	961	749	961	754
Loans collectively evaluated for impairment	18,215	22,063	18,215	22,063	18,713
Ending balance	18,964	23,024	18,964	23,024	19,467
Unallocated [Member]
Allowance for credit losses [Roll Forward]
Beginning balance	610	22	438	199	199
Provision for (reversal of) loan losses	(258)	1,173	(86)	996	239
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0	0
Net (charge-offs) recoveries	0	0	0	0	0
Ending balance	352	1,195	352	1,195	438
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	0	0	0	0	0
Loans collectively evaluated for impairment	352	1,195	352	1,195	438
Ending balance	$ 352	$ 1,195	$ 352	$ 1,195	$ 438