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LOANS AND RELATED ALLOWANCE FOR LOAN LOSSES, Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | $ 12,884 |  |  |  | $ 11,190 | $ 12,884 | $ 11,190 | $ 8,886
Charge-offs |  |  |  |  |  |  |  |  | (757) | (365) | (313)
Recoveries |  |  |  |  |  |  |  |  | 43 | 134 | 77
Provision | $ 525 | $ 400 | $ 350 | 400 | $ 625 | $ 475 | $ 325 | 500 | 1,675 | 1,925 | 2,540
Balance at end of period | 13,845 |  |  |  | 12,884 |  |  |  | 13,845 | 12,884 | 11,190
Individually evaluated for impairment | 735 |  |  |  | 676 |  |  |  | 735 | 676 | 410
Collectively evaluated for impairment | 13,110 |  |  |  | 12,208 |  |  |  | 13,110 | 12,208 | 10,780
Real Estate Loans [Member] | Residential [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 1,105 |  |  |  | 1,049 | 1,105 | 1,049 | 1,064
Charge-offs |  |  |  |  |  |  |  |  | (32) | (118) | (107)
Recoveries |  |  |  |  |  |  |  |  | 0 | 69 | 0
Provision |  |  |  |  |  |  |  |  | 41 | 105 | 92
Balance at end of period | 1,114 |  |  |  | 1,105 |  |  |  | 1,114 | 1,105 | 1,049
Individually evaluated for impairment | 32 |  |  |  | 24 |  |  |  | 32 | 24 | 56
Collectively evaluated for impairment | 1,082 |  |  |  | 1,081 |  |  |  | 1,082 | 1,081 | 993
Real Estate Loans [Member] | Commercial [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 4,115 |  |  |  | 3,867 | 4,115 | 3,867 | 3,589
Charge-offs |  |  |  |  |  |  |  |  | (578) | (66) | (41)
Recoveries |  |  |  |  |  |  |  |  | 0 | 3 | 11
Provision |  |  |  |  |  |  |  |  | 1,012 | 311 | 308
Balance at end of period | 4,549 |  |  |  | 4,115 |  |  |  | 4,549 | 4,115 | 3,867
Individually evaluated for impairment | 251 |  |  |  | 216 |  |  |  | 251 | 216 | 94
Collectively evaluated for impairment | 4,298 |  |  |  | 3,899 |  |  |  | 4,298 | 3,899 | 3,773
Real Estate Loans [Member] | Agricultural [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 4,264 |  |  |  | 3,143 | 4,264 | 3,143 | 1,494
Charge-offs |  |  |  |  |  |  |  |  | 0 | 0 | (30)
Recoveries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Provision |  |  |  |  |  |  |  |  | 758 | 1,121 | 1,679
Balance at end of period | 5,022 |  |  |  | 4,264 |  |  |  | 5,022 | 4,264 | 3,143
Individually evaluated for impairment | 151 |  |  |  | 84 |  |  |  | 151 | 84 | 3
Collectively evaluated for impairment | 4,871 |  |  |  | 4,180 |  |  |  | 4,871 | 4,180 | 3,140
Real Estate Loans [Member] | Construction [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 58 |  |  |  | 23 | 58 | 23 | 47
Charge-offs |  |  |  |  |  |  |  |  | 0 | 0 | 0
Recoveries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Provision |  |  |  |  |  |  |  |  | (15) | 35 | (24)
Balance at end of period | 43 |  |  |  | 58 |  |  |  | 43 | 58 | 23
Individually evaluated for impairment | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Collectively evaluated for impairment | 43 |  |  |  | 58 |  |  |  | 43 | 58 | 23
Consumer [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 120 |  |  |  | 124 | 120 | 124 | 122
Charge-offs |  |  |  |  |  |  |  |  | (49) | (40) | (130)
Recoveries |  |  |  |  |  |  |  |  | 33 | 31 | 49
Provision |  |  |  |  |  |  |  |  | 8 | 5 | 83
Balance at end of period | 112 |  |  |  | 120 |  |  |  | 112 | 120 | 124
Individually evaluated for impairment | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Collectively evaluated for impairment | 112 |  |  |  | 120 |  |  |  | 112 | 120 | 124
Other Commercial Loans [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 1,354 |  |  |  | 1,272 | 1,354 | 1,272 | 1,327
Charge-offs |  |  |  |  |  |  |  |  | (38) | (91) | 0
Recoveries |  |  |  |  |  |  |  |  | 10 | 30 | 16
Provision |  |  |  |  |  |  |  |  | (71) | 143 | (71)
Balance at end of period | 1,255 |  |  |  | 1,354 |  |  |  | 1,255 | 1,354 | 1,272
Individually evaluated for impairment | 147 |  |  |  | 193 |  |  |  | 147 | 193 | 231
Collectively evaluated for impairment | 1,108 |  |  |  | 1,161 |  |  |  | 1,108 | 1,161 | 1,041
Other Agricultural Loans [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 752 |  |  |  | 492 | 752 | 492 | 312
Charge-offs |  |  |  |  |  |  |  |  | (60) | (50) | (5)
Recoveries |  |  |  |  |  |  |  |  | 0 | 1 | 1
Provision |  |  |  |  |  |  |  |  | 269 | 309 | 184
Balance at end of period | 961 |  |  |  | 752 |  |  |  | 961 | 752 | 492
Individually evaluated for impairment | 154 |  |  |  | 159 |  |  |  | 154 | 159 | 26
Collectively evaluated for impairment | 807 |  |  |  | 593 |  |  |  | 807 | 593 | 466
State and Political Subdivision Loans [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 762 |  |  |  | 816 | 762 | 816 | 833
Charge-offs |  |  |  |  |  |  |  |  | 0 | 0 | 0
Recoveries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Provision |  |  |  |  |  |  |  |  | (226) | (54) | (17)
Balance at end of period | 536 |  |  |  | 762 |  |  |  | 536 | 762 | 816
Individually evaluated for impairment | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Collectively evaluated for impairment | 536 |  |  |  | 762 |  |  |  | 536 | 762 | 816
Unallocated [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | $ 354 |  |  |  | $ 404 | 354 | 404 | 98
Charge-offs |  |  |  |  |  |  |  |  | 0 | 0 | 0
Recoveries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Provision |  |  |  |  |  |  |  |  | (101) | (50) | 306
Balance at end of period | 253 |  |  |  | 354 |  |  |  | 253 | 354 | 404
Individually evaluated for impairment | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Collectively evaluated for impairment | $ 253 |  |  |  | $ 354 |  |  |  | $ 253 | $ 354 | $ 404

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- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118955202&loc=SL82895884-210446 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 + Details
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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
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- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=118955255&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
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