LOANS, Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Allowance for credit losses [Roll Forward]
Beginning balance	$ 10,899	$ 9,251	$ 9,251
Provision for (reversal of) loan losses	600	450	1,800
Charge-offs	(11)	(135)	(539)
Recoveries	11	41	387
Net charge-offs	0	(94)	(152)
Ending balance	11,499	9,607	10,899
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	2,079	983	1,644
Loans collectively evaluated for impairment	9,420	8,624	9,255
Ending balance	11,499	9,607	10,899
Loans individually and collectively evaluated for impairment [Abstract]
Loans individually evaluated for impairment	10,766	7,198	10,959
Loans collectively evaluated for impairment	653,157	618,909	668,604
Ending balance	663,923	626,107	679,563
Commercial [Member]
Allowance for credit losses [Roll Forward]
Beginning balance	3,571	3,097	3,097
Provision for (reversal of) loan losses	235	(35)	883
Charge-offs	0	(100)	(446)
Recoveries	2	18	37
Net charge-offs	2	(82)	(409)
Ending balance	3,808	2,980	3,571
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	1,341	188	898
Loans collectively evaluated for impairment	2,467	2,792	2,673
Ending balance	3,808	2,980	3,571
Loans individually and collectively evaluated for impairment [Abstract]
Loans individually evaluated for impairment	5,544	1,062	5,578
Loans collectively evaluated for impairment	115,509	129,352	120,733
Ending balance	121,053	130,414	126,311
Commercial Real Estate [Member]
Allowance for credit losses [Roll Forward]
Beginning balance	3,910	3,343	3,343
Provision for (reversal of) loan losses	813	308	582
Charge-offs	0	(15)	(15)
Recoveries	0	0	0
Net charge-offs	0	(15)	(15)
Ending balance	4,723	3,636	3,910
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	38	41	39
Loans collectively evaluated for impairment	4,685	3,595	3,871
Ending balance	4,723	3,636	3,910
Loans individually and collectively evaluated for impairment [Abstract]
Loans individually evaluated for impairment	795	891	823
Loans collectively evaluated for impairment	341,385	316,059	343,387
Ending balance	342,180	316,950	344,210
Agriculture [Member]
Allowance for credit losses [Roll Forward]
Beginning balance	1,262	1,060	1,060
Provision for (reversal of) loan losses	25	(95)	121
Charge-offs	0	0	0
Recoveries	0	0	81
Net charge-offs	0	0	81
Ending balance	1,287	965	1,262
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	0	0	0
Loans collectively evaluated for impairment	1,287	965	1,262
Ending balance	1,287	965	1,262
Loans individually and collectively evaluated for impairment [Abstract]
Loans individually evaluated for impairment	0	0	0
Loans collectively evaluated for impairment	94,652	77,185	101,905
Ending balance	94,652	77,185	101,905
Residential Mortgage [Member]
Allowance for credit losses [Roll Forward]
Beginning balance	660	739	739
Provision for (reversal of) loan losses	41	(38)	(67)
Charge-offs	0	0	(13)
Recoveries	0	1	1
Net charge-offs	0	1	(12)
Ending balance	701	702	660
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	578	607	584
Loans collectively evaluated for impairment	123	95	76
Ending balance	701	702	660
Loans individually and collectively evaluated for impairment [Abstract]
Loans individually evaluated for impairment	3,022	3,544	3,034
Loans collectively evaluated for impairment	40,154	37,868	37,203
Ending balance	43,176	41,412	40,237
Residential Construction [Member]
Allowance for credit losses [Roll Forward]
Beginning balance	440	334	334
Provision for (reversal of) loan losses	13	66	101
Charge-offs	0	0	0
Recoveries	1	1	5
Net charge-offs	1	1	5
Ending balance	454	401	440
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	98	114	98
Loans collectively evaluated for impairment	356	287	342
Ending balance	454	401	440
Loans individually and collectively evaluated for impairment [Abstract]
Loans individually evaluated for impairment	812	997	820
Loans collectively evaluated for impairment	21,926	15,763	22,830
Ending balance	22,738	16,760	23,650
Consumer [Member]
Allowance for credit losses [Roll Forward]
Beginning balance	498	641	641
Provision for (reversal of) loan losses	(114)	(53)	(341)
Charge-offs	(11)	(20)	(65)
Recoveries	8	21	263
Net charge-offs	(3)	1	198
Ending balance	381	589	498
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	24	33	25
Loans collectively evaluated for impairment	357	556	473
Ending balance	381	589	498
Loans individually and collectively evaluated for impairment [Abstract]
Loans individually evaluated for impairment	593	704	704
Loans collectively evaluated for impairment	39,531	42,682	42,546
Ending balance	40,124	43,386	43,250
Unallocated [Member]
Allowance for credit losses [Roll Forward]
Beginning balance	558	37	37
Provision for (reversal of) loan losses	(413)	297	521
Charge-offs	0	0	0
Recoveries	0	0	0
Net charge-offs	0	0	0
Ending balance	145	334	558
Period-end amount allocated to [Abstract]
Loans individually evaluated for impairment	0	0	0
Loans collectively evaluated for impairment	145	334	558
Ending balance	$ 145	$ 334	$ 558