LOANS AND RELATED ALLOWANCE FOR LOAN LOSSES, Impaired Financing Receivable (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	$ 27,160	$ 28,887
Recorded Investment With No Allowance	16,802	21,756
Recorded Investment With Allowance	6,648	2,642
Total Recorded Investment	23,450	24,398
Related Allowance	676	410
Average Recorded Investment	24,743	22,392	$ 12,874
Interest Income Recognized	786	750	201
Interest Income Recognized Cash Basis	20	59	7
Real Estate Loans [Member] \| Mortgages [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	932	1,055
Recorded Investment With No Allowance	515	273
Recorded Investment With Allowance	288	700
Total Recorded Investment	803	973
Related Allowance	10	47
Average Recorded Investment	944	900	590
Interest Income Recognized	13	13	13
Interest Income Recognized Cash Basis	0	0	0
Real Estate Loans [Member] \| Home Equity [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	106	92
Recorded Investment With No Allowance	12	40
Recorded Investment With Allowance	75	52
Total Recorded Investment	87	92
Related Allowance	14	9
Average Recorded Investment	95	67	59
Interest Income Recognized	4	4	4
Interest Income Recognized Cash Basis	0	0	0
Real Estate Loans [Member] \| Commercial [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	16,326	16,363
Recorded Investment With No Allowance	11,933	13,154
Recorded Investment With Allowance	1,394	710
Total Recorded Investment	13,327	13,864
Related Allowance	216	94
Average Recorded Investment	13,907	11,567	5,959
Interest Income Recognized	506	385	69
Interest Income Recognized Cash Basis	20	7	1
Real Estate Loans [Member] \| Agricultural [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	5,598	5,231
Recorded Investment With No Allowance	2,386	3,283
Recorded Investment With Allowance	3,206	618
Total Recorded Investment	5,592	3,901
Related Allowance	84	3
Average Recorded Investment	4,736	3,574	361
Interest Income Recognized	151	131	17
Interest Income Recognized Cash Basis	0	0	0
Consumer [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance		10
Recorded Investment With No Allowance		2
Recorded Investment With Allowance		6
Total Recorded Investment		8
Related Allowance		0
Average Recorded Investment	1	3	0
Interest Income Recognized	0	0	0
Interest Income Recognized Cash Basis	0	0	0
Other Commercial Loans [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	2,711	4,739
Recorded Investment With No Allowance	1,836	3,766
Recorded Investment With Allowance	370	431
Total Recorded Investment	2,206	4,197
Related Allowance	193	231
Average Recorded Investment	3,659	4,790	5,715
Interest Income Recognized	89	152	87
Interest Income Recognized Cash Basis	0	52	6
Other Agricultural Loans [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	1,487	1,397
Recorded Investment With No Allowance	120	1,238
Recorded Investment With Allowance	1,315	125
Total Recorded Investment	1,435	1,363
Related Allowance	159	26
Average Recorded Investment	1,401	1,491	190
Interest Income Recognized	23	65	11
Interest Income Recognized Cash Basis	$ 0	$ 0	$ 0

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- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5258-111524

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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524

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Amount of allowance for credit losses related to recorded investment.

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Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

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Amount of investment in impaired financing receivables for which there is no related allowance for credit losses.

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Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.

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