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Allowance for Loan Losses - Change in Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Allowance balance attributable to loans: |  |  |
Balance at the beginning of period | $ 32,873 | $ 34,023 | $ 35,726
Provision charged to operations | 11,080 | 8,515 | 11,006
Loans charged off | (9,642) | (14,553) | (17,272)
Recoveries of loans previously charged off | 4,845 | 4,888 | 4,563
Balance at the end of period | 39,156 | 32,873 | 34,023
Real estate - residential mortgage |  |  |
Allowance balance attributable to loans: |  |  |
Balance at the beginning of period | 2,080 | 2,246 | 2,371
Provision charged to operations | 808 | (146) | (140)
Loans charged off | (62) | (46) | (42)
Recoveries of loans previously charged off | 88 | 26 | 57
Balance at the end of period | 2,914 | 2,080 | 2,246
Real estate - construction |  |  |
Allowance balance attributable to loans: |  |  |
Balance at the beginning of period | 681 | 727 | 605
Provision charged to operations | 294 | (46) | 122
Balance at the end of period | 975 | 681 | 727
Commercial, financial and agricultural |  |  |
Allowance balance attributable to loans: |  |  |
Balance at the beginning of period | 7,121 | 6,688 | 7,478
Provision charged to operations | 3,589 | 458 | (440)
Loans charged off | (18) | (29) | (409)
Recoveries of loans previously charged off | 4 | 4 | 59
Balance at the end of period | 10,696 | 7,121 | 6,688
Equity lines |  |  |
Allowance balance attributable to loans: |  |  |
Balance at the beginning of period | 733 | 1,106 | 688
Provision charged to operations | (47) | (235) | 418
Loans charged off |  | (138) |
Recoveries of loans previously charged off | 1 |  |
Balance at the end of period | 687 | 733 | 1,106
Consumer |  |  |
Allowance balance attributable to loans: |  |  |
Balance at the beginning of period | 465 | 257 | 231
Provision charged to operations | (34) | 329 | 140
Loans charged off | (231) | (349) | (344)
Recoveries of loans previously charged off | 171 | 228 | 230
Balance at the end of period | 371 | 465 | 257
Consumer finance |  |  |
Allowance balance attributable to loans: |  |  |
Balance at the beginning of period | 21,793 | 22,999 | 24,353
Provision charged to operations | 6,470 | 8,155 | 10,906
Loans charged off | (9,331) | (13,991) | (16,477)
Recoveries of loans previously charged off | 4,581 | 4,630 | 4,217
Balance at the end of period | $ 23,513 | $ 21,793 | $ 22,999

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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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