LOANS, ALLOWANCES FOR CREDIT LOSSES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Allowance for loan losses:
Balance, beginning of year	$ 4,046	$ 3,403	$ 3,575
Provision charged to expenses	207	923	215
Losses charged off	(667)	(693)	(915)
Recoveries	459	413	528
Balance, end of year	4,045	4,046	3,403
Individually evaluated for impairment				$ 295	$ 62	$ 191
Collectively evaluated for impairment				3,750	3,984	3,212
Acquired credit impaired loans				0	0
Balance, end of year	4,045	4,046	3,403	4,045	4,046	3,403
Loans:
Individually evaluated for impairment				8,638	17,140
Collectively evaluated for impairment				1,227,590	1,170,681
Acquired credit impaired loans				7,223	10,802
Total loans				1,243,451	1,198,623
Commercial & industrial
Allowance for loan losses:
Balance, beginning of year	400	378	350
Provision charged to expenses	103	21	(71)
Losses charged off	(47)	0	0
Recoveries	0	1	99
Balance, end of year	456	400	378
Individually evaluated for impairment				6	10	8
Collectively evaluated for impairment				450	390	370
Acquired credit impaired loans				0	0
Balance, end of year	456	400	378	456	400	378
Loans:
Individually evaluated for impairment				230	268
Collectively evaluated for impairment				77,430	76,609
Total loans				78,371	77,799
Commercial, secured by real estate
Allowance for loan losses:
Balance, beginning of year	2,745	2,178	2,179
Provision charged to expenses	266	473	348
Losses charged off	(143)	(145)	(462)
Recoveries	56	239	113
Balance, end of year	2,924	2,745	2,178
Individually evaluated for impairment				272	3	146
Collectively evaluated for impairment				2,652	2,742	2,032
Acquired credit impaired loans				0	0
Balance, end of year	2,924	2,745	2,178	2,924	2,745	2,178
Loans:
Individually evaluated for impairment				7,432	15,101
Collectively evaluated for impairment				793,191	718,709
Total loans				804,154	740,125
Residential real estate
Allowance for loan losses:
Balance, beginning of year	767	717	885
Provision charged to expenses	(264)	213	(83)
Losses charged off	(272)	(234)	(225)
Recoveries	297	71	140
Balance, end of year	528	767	717
Individually evaluated for impairment				17	49	29
Collectively evaluated for impairment				511	718	688
Acquired credit impaired loans				0	0
Balance, end of year	528	767	717	528	767	717
Loans:
Individually evaluated for impairment				949	1,558
Collectively evaluated for impairment				319,188	344,751
Total loans				322,855	349,538
Consumer
Allowance for loan losses:
Balance, beginning of year	87	76	96
Provision charged to expenses	4	133	(44)
Losses charged off	(24)	(135)	(90)
Recoveries	32	13	114
Balance, end of year	99	87	76
Individually evaluated for impairment				0	0	8
Collectively evaluated for impairment				99	87	68
Acquired credit impaired loans				0	0
Balance, end of year	99	87	76	99	87	76
Loans:
Individually evaluated for impairment				27	36
Collectively evaluated for impairment				25,328	17,363
Total loans				25,355	17,399
Agricultural
Allowance for loan losses:
Balance, beginning of year	46	53	60
Provision charged to expenses	(12)	(7)	(7)
Losses charged off	0	0	0
Recoveries	0	0	0
Balance, end of year	34	46	53
Individually evaluated for impairment				0	0	0
Collectively evaluated for impairment				34	46	53
Acquired credit impaired loans				0	0
Balance, end of year	34	46	53	34	46	53
Loans:
Individually evaluated for impairment				0	177
Collectively evaluated for impairment				11,523	13,135
Total loans				11,523	13,312
Other
Allowance for loan losses:
Balance, beginning of year	1	1	5
Provision charged to expenses	110	90	72
Losses charged off	(181)	(179)	(138)
Recoveries	74	89	62
Balance, end of year	4	1	1
Individually evaluated for impairment				0	0	0
Collectively evaluated for impairment				4	1	1
Acquired credit impaired loans				0	0
Balance, end of year	$ 4	$ 1	$ 1	4	1	1
Loans:
Individually evaluated for impairment				0	0
Collectively evaluated for impairment				930	114
Total loans				1,193	450
Financial Receivable Acquired Credit Impaired
Loans:
Acquired credit impaired loans				7,223	10,802	$ 0
Financial Receivable Acquired Credit Impaired | Commercial & industrial
Loans:
Acquired credit impaired loans				711	922
Financial Receivable Acquired Credit Impaired | Commercial, secured by real estate
Loans:
Acquired credit impaired loans				3,531	6,315
Financial Receivable Acquired Credit Impaired | Residential real estate
Loans:
Acquired credit impaired loans				2,718	3,229
Financial Receivable Acquired Credit Impaired | Consumer
Loans:
Acquired credit impaired loans				0	0
Financial Receivable Acquired Credit Impaired | Agricultural
Loans:
Acquired credit impaired loans				0	0
Financial Receivable Acquired Credit Impaired | Other
Loans:
Acquired credit impaired loans				$ 263	$ 336