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Loans and Allowance for Credit Losses - Non-TDR Loan Modifications due to COVID-19 (Details) - CARES Act Modification $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2021 USD ($) deferral | Dec. 31, 2020 USD ($)
Financing Receivable, Modification [Line Items] |  |
Deferrals Balance | $ 20,171 | $ 63,902
Number of Deferrals | deferral | 187 |
Commercial and commercial real estate |  |
Financing Receivable, Modification [Line Items] |  |
Deferrals Balance | $ 16,641 | 53,823
Number of Deferrals | deferral | 34 |
Second deferrals between 90 and 180 days, amount | $ 4,200 |
Residential real estate |  |
Financing Receivable, Modification [Line Items] |  |
Deferrals Balance | $ 767 | 1,855
Number of Deferrals | deferral | 2 |
Second deferrals between 90 and 180 days, amount | $ 100 |
Consumer credit |  |
Financing Receivable, Modification [Line Items] |  |
Deferrals Balance | $ 2,763 | $ 8,224
Number of Deferrals | deferral | 151 |
Second deferrals between 90 and 180 days, amount | $ 400 |

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