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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, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | $ 13,845 |  |  |  | $ 12,884 | $ 13,845 | $ 12,884 | $ 11,190
Charge-offs |  |  |  |  |  |  |  |  | (533) | (757) | (365)
Recoveries |  |  |  |  |  |  |  |  | 103 | 43 | 134
Provision | $ 900 | $ 550 | $ 550 | 400 | $ 525 | $ 400 | $ 350 | 400 | 2,400 | 1,675 | 1,925
Balance at end of period | 15,815 |  |  |  | 13,845 |  |  |  | 15,815 | 13,845 | 12,884
Individually evaluated for impairment | 510 |  |  |  | 735 |  |  |  | 510 | 735 | 676
Collectively evaluated for impairment | 15,305 |  |  |  | 13,110 |  |  |  | 15,305 | 13,110 | 12,208
Real Estate Loans [Member] | Residential [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 1,114 |  |  |  | 1,105 | 1,114 | 1,105 | 1,049
Charge-offs |  |  |  |  |  |  |  |  | 0 | (32) | (118)
Recoveries |  |  |  |  |  |  |  |  | 14 | 0 | 69
Provision |  |  |  |  |  |  |  |  | 46 | 41 | 105
Balance at end of period | 1,174 |  |  |  | 1,114 |  |  |  | 1,174 | 1,114 | 1,105
Individually evaluated for impairment | 18 |  |  |  | 32 |  |  |  | 18 | 32 | 24
Collectively evaluated for impairment | 1,156 |  |  |  | 1,082 |  |  |  | 1,156 | 1,082 | 1,081
Real Estate Loans [Member] | Commercial [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 4,549 |  |  |  | 4,115 | 4,549 | 4,115 | 3,867
Charge-offs |  |  |  |  |  |  |  |  | (435) | (578) | (66)
Recoveries |  |  |  |  |  |  |  |  | 37 | 0 | 3
Provision |  |  |  |  |  |  |  |  | 2,065 | 1,012 | 311
Balance at end of period | 6,216 |  |  |  | 4,549 |  |  |  | 6,216 | 4,549 | 4,115
Individually evaluated for impairment | 95 |  |  |  | 251 |  |  |  | 95 | 251 | 216
Collectively evaluated for impairment | 6,121 |  |  |  | 4,298 |  |  |  | 6,121 | 4,298 | 3,899
Real Estate Loans [Member] | Agricultural [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 5,022 |  |  |  | 4,264 | 5,022 | 4,264 | 3,143
Charge-offs |  |  |  |  |  |  |  |  | (4) | 0 | 0
Recoveries |  |  |  |  |  |  |  |  | 19 | 0 | 0
Provision |  |  |  |  |  |  |  |  | (84) | 758 | 1,121
Balance at end of period | 4,953 |  |  |  | 5,022 |  |  |  | 4,953 | 5,022 | 4,264
Individually evaluated for impairment | 83 |  |  |  | 151 |  |  |  | 83 | 151 | 84
Collectively evaluated for impairment | 4,870 |  |  |  | 4,871 |  |  |  | 4,870 | 4,871 | 4,180
Real Estate Loans [Member] | Construction [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 43 |  |  |  | 58 | 43 | 58 | 23
Charge-offs |  |  |  |  |  |  |  |  | 0 | 0 | 0
Recoveries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Provision |  |  |  |  |  |  |  |  | 79 | (15) | 35
Balance at end of period | 122 |  |  |  | 43 |  |  |  | 122 | 43 | 58
Individually evaluated for impairment | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Collectively evaluated for impairment | 122 |  |  |  | 43 |  |  |  | 122 | 43 | 58
Consumer [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 112 |  |  |  | 120 | 112 | 120 | 124
Charge-offs |  |  |  |  |  |  |  |  | (50) | (49) | (40)
Recoveries |  |  |  |  |  |  |  |  | 21 | 33 | 31
Provision |  |  |  |  |  |  |  |  | 238 | 8 | 5
Balance at end of period | 321 |  |  |  | 112 |  |  |  | 321 | 112 | 120
Individually evaluated for impairment | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Collectively evaluated for impairment | 321 |  |  |  | 112 |  |  |  | 321 | 112 | 120
Other Commercial Loans [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 1,255 |  |  |  | 1,354 | 1,255 | 1,354 | 1,272
Charge-offs |  |  |  |  |  |  |  |  | (44) | (38) | (91)
Recoveries |  |  |  |  |  |  |  |  | 12 | 10 | 30
Provision |  |  |  |  |  |  |  |  | 3 | (71) | 143
Balance at end of period | 1,226 |  |  |  | 1,255 |  |  |  | 1,226 | 1,255 | 1,354
Individually evaluated for impairment | 170 |  |  |  | 147 |  |  |  | 170 | 147 | 193
Collectively evaluated for impairment | 1,056 |  |  |  | 1,108 |  |  |  | 1,056 | 1,108 | 1,161
Other Agricultural Loans [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 961 |  |  |  | 752 | 961 | 752 | 492
Charge-offs |  |  |  |  |  |  |  |  | 0 | (60) | (50)
Recoveries |  |  |  |  |  |  |  |  | 0 | 0 | 1
Provision |  |  |  |  |  |  |  |  | (97) | 269 | 309
Balance at end of period | 864 |  |  |  | 961 |  |  |  | 864 | 961 | 752
Individually evaluated for impairment | 144 |  |  |  | 154 |  |  |  | 144 | 154 | 159
Collectively evaluated for impairment | 720 |  |  |  | 807 |  |  |  | 720 | 807 | 593
State and Political Subdivision Loans [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 536 |  |  |  | 762 | 536 | 762 | 816
Charge-offs |  |  |  |  |  |  |  |  | 0 | 0 | 0
Recoveries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Provision |  |  |  |  |  |  |  |  | (57) | (226) | (54)
Balance at end of period | 479 |  |  |  | 536 |  |  |  | 479 | 536 | 762
Individually evaluated for impairment | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Collectively evaluated for impairment | 479 |  |  |  | 536 |  |  |  | 479 | 536 | 762
Unallocated [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | $ 253 |  |  |  | $ 354 | 253 | 354 | 404
Charge-offs |  |  |  |  |  |  |  |  | 0 | 0 | 0
Recoveries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Provision |  |  |  |  |  |  |  |  | 207 | (101) | (50)
Balance at end of period | 460 |  |  |  | 253 |  |  |  | 460 | 253 | 354
Individually evaluated for impairment | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Collectively evaluated for impairment | $ 460 |  |  |  | $ 253 |  |  |  | $ 460 | $ 253 | $ 354

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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=121611835&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(2)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: 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=121599878&loc=SL82895884-210446 Reference 4: 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=121599337&loc=SL82919249-210447 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=121599337&loc=SL82919249-210447 + Details
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- Definition Amount of increase in allowance for credit loss on financing receivable from recovery. + 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=121647567&loc=SL82922352-210448 Reference 2: 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=121599337&loc=SL82919249-210447 Reference 3: 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=121611835&loc=SL6953423-111524 + Details
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