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Loans - Troubled Debt Restructurings (Details) | 12 Months Ended | 24 Months Ended
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Dec. 31, 2019 USD ($) loan item | Dec. 31, 2018 USD ($) loan item | Dec. 31, 2017 | Dec. 31, 2017 loan | Dec. 31, 2017 item | Dec. 31, 2017 USD ($) | Dec. 31, 2019
Loan modifications classified as troubled debt restructurings |  |  |  |  |  |  |
Number of Loans | 3 | 2 |  |  |  | 9,000 |
Recorded Investment | $ 216,000 | $ 145 |  |  |  | $ 7,165,000 |
TDR payment default period |  |  |  |  |  |  | 12 months
Period determining when a past due TDR becomes a subsequent default |  |  | 90 days |  |  |  | 90 days
Recorded Investment, TDR payment defaults | $ 0 | $ 0 |  |  |  | $ 4,650,000 |
Modifications of interest rate |  |  |  |  |  |  |
Loan modifications classified as troubled debt restructurings |  |  |  |  |  |  |
Number of Loans | item | 1 | 1 |  |  | 9 |  |
modifications of payment structure |  |  |  |  |  |  |
Loan modifications classified as troubled debt restructurings |  |  |  |  |  |  |
Number of Loans | item | 2 | 1 |  |  |  |  |
Modification of term |  |  |  |  |  |  |
Loan modifications classified as troubled debt restructurings |  |  |  |  |  |  |
Number of Loans |  |  |  | 3 | 3 |  |
Reduction in principal |  |  |  |  |  |  |
Loan modifications classified as troubled debt restructurings |  |  |  |  |  |  |
Number of Loans | item | 0 | 0 |  |  | 0 |  |
Real estate - residential mortgage |  |  |  |  |  |  |
Loan modifications classified as troubled debt restructurings |  |  |  |  |  |  |
Number of Loans | 2 | 1 |  |  |  | 2,000 |
Recorded Investment | $ 95,000 | $ 140 |  |  |  | $ 365,000 |
Commercial, financial and agricultural | Commercial real estate lending |  |  |  |  |  |  |
Loan modifications classified as troubled debt restructurings |  |  |  |  |  |  |
Number of Loans |  |  |  |  |  | 7,000 |
Recorded Investment |  |  |  |  |  | $ 6,800,000 |
Consumer |  |  |  |  |  |  |
Loan modifications classified as troubled debt restructurings |  |  |  |  |  |  |
Number of Loans | loan | 1 | 1 |  |  |  |  |
Recorded Investment | $ 121,000 | $ 5 |  |  |  |  |

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- Definition The period of time after the original troubled debt modification within which a subsequent default is defined to occur if a full or partial charge-off occurs. + References No definition available. + Details
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- Definition The period of time after the restructured troubled debt becomes past due used to define a subsequent default. + References No definition available. + Details
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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 + Details
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- Definition Amount, before troubled debt restructuring, of financing receivable to be modified. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 + Details
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- Definition Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953682-111524 + Details
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