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Fair Value Disclosures and Reporting and Fair Value Measurements - Assets Measured on Recurring Basis, Fair Value (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |
Investment securities available for sale | $ 741,789 |  | $ 1,019,201
Gross losses on sales, calls and maturities of securities available for sale | 17,371 |  |
Gross gains on sales, calls and maturities of securities available for sale | 54 | $ 45 |
Gross Gains (Loss) On Sales Calls And Maturities Of Securities Available For Sale | (17,317) | $ 45 |
U.S. Government Agencies [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |
Investment securities available for sale | 65,437 |  | 102,749
Mortgage-Backed Securities [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |
Investment securities available for sale | 13,448 |  | 99,544
States and Political Subdivisions [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |
Investment securities available for sale | 44,675 |  | 194,206
Corporate Bond [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |
Investment securities available for sale | 54,659 |  | 52,040
Collateralized Loan Obligations [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |
Investment securities available for sale | 563,570 |  | 570,662
Fair Value, Measurements, Recurring [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |
Investment securities available for sale | 741,789 |  | 1,019,201
Fair Value, Measurements, Recurring [Member] | U.S. Government Agencies [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |
Investment securities available for sale | 65,437 |  | 102,749
Fair Value, Measurements, Recurring [Member] | Mortgage-Backed Securities [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |
Investment securities available for sale | 13,448 |  | 99,544
Fair Value, Measurements, Recurring [Member] | States and Political Subdivisions [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |
Investment securities available for sale | 44,675 |  | 194,206
Fair Value, Measurements, Recurring [Member] | Corporate Bond [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |
Investment securities available for sale | 54,659 |  | 52,040
Fair Value, Measurements, Recurring [Member] | Collateralized Loan Obligations [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |
Investment securities available for sale | 563,570 |  | 570,662
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |
Investment securities available for sale | 687,130 |  | 967,161
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | U.S. Government Agencies [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |
Investment securities available for sale | 65,437 |  | 102,749
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Mortgage-Backed Securities [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |
Investment securities available for sale | 13,448 |  | 99,544
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | States and Political Subdivisions [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |
Investment securities available for sale | 44,675 |  | 194,206
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Collateralized Loan Obligations [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |
Investment securities available for sale | 563,570 |  | 570,662
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |
Investment securities available for sale | 54,659 |  | 52,040
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Corporate Bond [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |
Investment securities available for sale | $ 54,659 |  | $ 52,040

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