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Loans and the Allowance for Loan Losses (Details) - Purchase credit impaired loans - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Financing Receivable, Impaired [Line Items] |  |
Total carrying amount | $ 13,520 | $ 6,553
Commercial Portfolio Segment [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Total carrying amount | 3,868 | 5,452
Commercial Real Estate Portfolio Segment [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Total carrying amount | 5,525 | 1,101
Commercial Construction Portfolio Segment [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Total carrying amount | $ 4,127 |

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