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Purchased Loans - Restructured Loans by Class (Details) - Purchased $ in Thousands | 12 Months Ended
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Dec. 31, 2019 USD ($) loan | Dec. 31, 2018 USD ($) loan | Dec. 31, 2017 USD ($) loan
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Number of Loans | loan | 5 | 5 | 28
Pre-Modification Outstanding Recorded Investment | $ 2,931 | $ 712 | $ 6,859
Post-Modification Outstanding Recorded Investment | $ 2,927 | $ 552 | $ 5,358
Commercial, financial, agricultural |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Number of Loans | loan | 2 | 1 |
Pre-Modification Outstanding Recorded Investment | $ 2,778 | $ 48 |
Post-Modification Outstanding Recorded Investment | $ 2,778 | $ 44 |
Real estate – 1-4 family mortgage |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Number of Loans | loan | 2 | 2 | 23
Pre-Modification Outstanding Recorded Investment | $ 73 | $ 142 | $ 3,744
Post-Modification Outstanding Recorded Investment | $ 73 | $ 127 | $ 3,127
Real estate – commercial mortgage |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Number of Loans | loan | 1 | 2 | 5
Pre-Modification Outstanding Recorded Investment | $ 80 | $ 522 | $ 3,115
Post-Modification Outstanding Recorded Investment | $ 76 | $ 381 | $ 2,231

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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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