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Non Purchased Loans - Impact of Modifications Classified as Restructured Loans (Details) - Non purchased loans and leases $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2019 USD ($) loan | Sep. 30, 2019 USD ($) loan | Sep. 30, 2018 USD ($) loan
Restructured loans |  |  |
Number of Loans | loan | 1 | 6 | 5
Pre- Modification Outstanding Recorded Investment | $ 16 | $ 508 | $ 708
Post- Modification Outstanding Recorded Investment | $ 16 | $ 505 | $ 703
Commercial |  |  |
Restructured loans |  |  |
Number of Loans | loan |  | 2 |
Pre- Modification Outstanding Recorded Investment |  | $ 187 |
Post- Modification Outstanding Recorded Investment |  | $ 185 |
Real estate – 1-4 family mortgage |  |  |
Restructured loans |  |  |
Number of Loans | loan | 1 | 4 | 4
Pre- Modification Outstanding Recorded Investment | $ 16 | $ 321 | $ 625
Post- Modification Outstanding Recorded Investment | $ 16 | $ 320 | $ 625
Real estate – commercial mortgage |  |  |
Restructured loans |  |  |
Number of Loans | loan |  |  | 1
Pre- Modification Outstanding Recorded Investment |  |  | $ 83
Post- Modification Outstanding Recorded Investment |  |  | $ 78

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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=118936363&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=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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