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Loans - Summary of Recorded Investment by Category for Portfolio Loans Restructured (Details) - Non-Covered Loans $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 USD ($) loan | Sep. 30, 2019 USD ($) loan | Sep. 30, 2018 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Loans | loan | 1 | 3 | 1
Pre-Modification Outstanding Recorded Balance | $ 187 | $ 520 | $ 187
Post-Modification Outstanding Recorded Balance | $ 187 | $ 520 | $ 187
Commercial and industrial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Loans | loan | 1 | 0 | 1
Pre-Modification Outstanding Recorded Balance | $ 187 | $ 0 | $ 187
Post-Modification Outstanding Recorded Balance | $ 187 | $ 0 | $ 187
CRE - owner occupied |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Loans | loan |  | 1 | 0
Pre-Modification Outstanding Recorded Balance |  | $ 188 | $ 0
Post-Modification Outstanding Recorded Balance |  | $ 188 | $ 0
Residential real estate |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Loans | loan |  | 2 | 0
Pre-Modification Outstanding Recorded Balance |  | $ 332 | $ 0
Post-Modification Outstanding Recorded Balance |  | $ 332 | $ 0

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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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