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Loans - Summary of Average of Impaired Loans and Related Interest Income by Loan Portfolio Class (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Allowance: Average Recorded Investment | $ 592 | $ 0
Impaired Loans with Allowance: Interest Income | 0 | 0
Impaired Loans with No Allowance: Average Recorded Investment | 7,552 | 7,245
Impaired Loans with No Allowance: Interest Income | 77 | 57
Commercial and industrial |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Allowance: Average Recorded Investment | 62 | 0
Impaired Loans with Allowance: Interest Income | 0 | 0
Impaired Loans with No Allowance: Average Recorded Investment | 0 | 0
Impaired Loans with No Allowance: Interest Income | 0 | 0
Commercial real estate |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Allowance: Average Recorded Investment | 530 | 0
Impaired Loans with Allowance: Interest Income | 0 | 0
Impaired Loans with No Allowance: Average Recorded Investment | 7,340 | 6,708
Impaired Loans with No Allowance: Interest Income | 70 | 57
Commercial real estate construction |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Allowance: Average Recorded Investment | 0 | 0
Impaired Loans with Allowance: Interest Income | 0 | 0
Impaired Loans with No Allowance: Average Recorded Investment | 0 | 0
Impaired Loans with No Allowance: Interest Income | 0 | 0
Residential mortgage |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Allowance: Average Recorded Investment | 0 | 0
Impaired Loans with Allowance: Interest Income | 0 | 0
Impaired Loans with No Allowance: Average Recorded Investment | 136 | 537
Impaired Loans with No Allowance: Interest Income | 7 | 0
Home equity lines of credit |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Allowance: Average Recorded Investment | 0 | 0
Impaired Loans with Allowance: Interest Income | 0 | 0
Impaired Loans with No Allowance: Average Recorded Investment | 76 | 0
Impaired Loans with No Allowance: Interest Income | $ 0 | $ 0

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- Definition Amount of average investment of impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5258-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 + Details
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