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Loans - Recorded Investment in Residential, Consumer and Credit Card Loans Based on Payment Activity (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans | $ 3,365,429 | $ 3,337,449
Consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans | 7,875 | 8,115
Performing | Consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans | 7,848 | 8,081
Nonperforming | Consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans | $ 27 | $ 34

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