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Purchased Loans - Impact of Modifications Classified as Restructured Loans (Details) - Purchased loans $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 USD ($) loan | Sep. 30, 2019 USD ($) loan | Sep. 30, 2020 USD ($) loan | Sep. 30, 2019 USD ($) loan
Restructured loans |  |  |  |
Number of Loans | loan | 6 | 2 | 13 | 4
Pre- Modification Outstanding Recorded Investment | $ 3,148 | $ 292 | $ 5,262 | $ 2,892
Post- Modification Outstanding Recorded Investment | $ 2,888 | $ 292 | $ 4,896 | $ 2,888
Commercial |  |  |  |
Restructured loans |  |  |  |
Number of Loans | loan |  | 1 | 1 | 2
Pre- Modification Outstanding Recorded Investment |  | $ 258 | $ 1,029 | $ 2,778
Post- Modification Outstanding Recorded Investment |  | $ 258 | $ 1,031 | $ 2,778
Real estate – 1-4 family mortgage |  |  |  |
Restructured loans |  |  |  |
Number of Loans | loan | 2 | 1 | 5 | 1
Pre- Modification Outstanding Recorded Investment | $ 44 | $ 34 | $ 493 | $ 34
Post- Modification Outstanding Recorded Investment | $ 44 | $ 34 | $ 389 | $ 34
Real estate – 1-4 family mortgage | Primary |  |  |  |
Restructured loans |  |  |  |
Number of Loans | loan | 2 |  | 4 |
Pre- Modification Outstanding Recorded Investment | $ 44 |  | $ 334 |
Post- Modification Outstanding Recorded Investment | $ 44 |  | $ 227 |
Real estate – 1-4 family mortgage | Home equity |  |  |  |
Restructured loans |  |  |  |
Number of Loans | loan |  |  | 1 |
Pre- Modification Outstanding Recorded Investment |  |  | $ 159 |
Post- Modification Outstanding Recorded Investment |  |  | $ 162 |
Real estate – commercial mortgage: |  |  |  |
Restructured loans |  |  |  |
Number of Loans | loan | 4 |  | 6 | 1
Pre- Modification Outstanding Recorded Investment | $ 3,104 |  | $ 3,715 | $ 80
Post- Modification Outstanding Recorded Investment | $ 2,844 |  | $ 3,457 | $ 76
Real estate – commercial mortgage: | Owner-occupied |  |  |  |
Restructured loans |  |  |  |
Number of Loans | loan | 4 |  | 5 |
Pre- Modification Outstanding Recorded Investment | $ 3,104 |  | $ 3,173 |
Post- Modification Outstanding Recorded Investment | $ 2,844 |  | $ 2,913 |
Real estate – commercial mortgage: | Non-owner occupied |  |  |  |
Restructured loans |  |  |  |
Number of Loans | loan |  |  | 1 |
Pre- Modification Outstanding Recorded Investment |  |  | $ 542 |
Post- Modification Outstanding Recorded Investment |  |  | $ 544 |
Installment loans to individuals |  |  |  |
Restructured loans |  |  |  |
Number of Loans | loan |  |  | 1 |
Pre- Modification Outstanding Recorded Investment |  |  | $ 25 |
Post- Modification Outstanding Recorded Investment |  |  | $ 19 |

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- Definition Troubled Debt Restructuring Financing Receivable Modifications [Abstract] + 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=121611835&loc=SL6953676-111524 + Details
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- Definition Amount, after troubled debt restructuring, of modified financing receivable. + 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=121611835&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=121611835&loc=SL6953676-111524 + Details
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