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Disclosures About Fair Value of Assets and Liabilities - Fair Value Measurements of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | $ 2,164,197 | $ 2,344,551
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | 1,959 | 999
Significant Other Observable Inputs (Level 2) |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | 2,153,326 | 2,338,061
Significant Unobservable Inputs (Level 3) |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | 8,912 | 5,491
Recurring | Interest rate swap liability |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Interest rate swap liability | 35,287 | 41,968
Recurring | U.S. Treasury |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | 1,959 | 999
Recurring | U.S. Government-sponsored agency securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | 79,098 | 95,136
Recurring | State and municipal |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | 1,496,533 | 1,576,532
Recurring | U.S. Government-sponsored mortgage-backed securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | 582,524 | 667,605
Recurring | Corporate obligations |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | 4,083 | 4,279
Recurring | Interest rate swap asset |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Interest rate swap asset | 34,995 | 41,133
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest rate swap liability |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Interest rate swap liability | 0 | 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Treasury |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | 1,959 | 999
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Government-sponsored agency securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | 0 | 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | State and municipal |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | 0 | 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Government-sponsored mortgage-backed securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | 0 | 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate obligations |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | 0 | 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest rate swap asset |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Interest rate swap asset | 0 | 0
Recurring | Significant Other Observable Inputs (Level 2) | Interest rate swap liability |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Interest rate swap liability | 35,287 | 41,968
Recurring | Significant Other Observable Inputs (Level 2) | U.S. Treasury |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | 0 | 0
Recurring | Significant Other Observable Inputs (Level 2) | U.S. Government-sponsored agency securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | 79,098 | 95,136
Recurring | Significant Other Observable Inputs (Level 2) | State and municipal |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | 1,487,656 | 1,571,076
Recurring | Significant Other Observable Inputs (Level 2) | U.S. Government-sponsored mortgage-backed securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | 582,520 | 667,601
Recurring | Significant Other Observable Inputs (Level 2) | Corporate obligations |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | 4,052 | 4,248
Recurring | Significant Other Observable Inputs (Level 2) | Interest rate swap asset |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Interest rate swap asset | 34,995 | 41,133
Recurring | Significant Unobservable Inputs (Level 3) | Interest rate swap liability |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Interest rate swap liability | 0 | 0
Recurring | Significant Unobservable Inputs (Level 3) | U.S. Treasury |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | 0 | 0
Recurring | Significant Unobservable Inputs (Level 3) | U.S. Government-sponsored agency securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | 0 | 0
Recurring | Significant Unobservable Inputs (Level 3) | State and municipal |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | 8,877 | 5,456
Recurring | Significant Unobservable Inputs (Level 3) | U.S. Government-sponsored mortgage-backed securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | 4 | 4
Recurring | Significant Unobservable Inputs (Level 3) | Corporate obligations |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment securities available for sale | 31 | 31
Recurring | Significant Unobservable Inputs (Level 3) | Interest rate swap asset |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Interest rate swap asset | $ 0 | $ 0

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