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Fair Value Measurements - General Disclosures (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Financial assets and financial liabilities measured at fair value |  |
Debt securities available for sale | $ 2,744,646 | $ 3,981,251
Equity securities | 11,264 | 13,571
Less loans held for sale | 4,813 | 23,875
U.S. Treasury securities |  |
Financial assets and financial liabilities measured at fair value |  |
Debt securities available for sale | 147,140 | 165,762
Obligations of U.S. government corporations and agencies |  |
Financial assets and financial liabilities measured at fair value |  |
Debt securities available for sale | 29,839 | 38,470
Obligations of states and political subdivisions |  |
Financial assets and financial liabilities measured at fair value |  |
Debt securities available for sale | 287,612 | 306,869
Asset-backed securities |  |
Financial assets and financial liabilities measured at fair value |  |
Debt securities available for sale | 468,129 | 492,186
Commercial mortgage-backed securities |  |
Financial assets and financial liabilities measured at fair value |  |
Debt securities available for sale | 98,362 | 614,998
Residential mortgage-backed securities |  |
Financial assets and financial liabilities measured at fair value |  |
Debt securities available for sale | 1,441,157 | 2,069,313
Corporate debt securities |  |
Financial assets and financial liabilities measured at fair value |  |
Debt securities available for sale | 272,407 | 293,653
Recurring basis |  |
Financial assets and financial liabilities measured at fair value |  |
Equity securities | 11,264 |
Less loans held for sale |  | 23,875
Recurring basis | Derivative assets |  |
Financial assets and financial liabilities measured at fair value |  |
Derivative asset | 25,129 | 20,314
Recurring basis | Derivative liabilities |  |
Financial assets and financial liabilities measured at fair value |  |
Derivative liability | 43,074 | 21,501
Recurring basis | U.S. Treasury securities |  |
Financial assets and financial liabilities measured at fair value |  |
Debt securities available for sale | 147,140 | 165,762
Recurring basis | Obligations of U.S. government corporations and agencies |  |
Financial assets and financial liabilities measured at fair value |  |
Debt securities available for sale | 29,839 | 38,470
Recurring basis | Obligations of states and political subdivisions |  |
Financial assets and financial liabilities measured at fair value |  |
Debt securities available for sale | 287,612 | 306,869
Recurring basis | Asset-backed securities |  |
Financial assets and financial liabilities measured at fair value |  |
Debt securities available for sale | 468,129 | 492,186
Recurring basis | Commercial mortgage-backed securities |  |
Financial assets and financial liabilities measured at fair value |  |
Debt securities available for sale | 98,362 | 614,998
Recurring basis | Residential mortgage-backed securities |  |
Financial assets and financial liabilities measured at fair value |  |
Debt securities available for sale | 1,441,157 | 2,069,313
Recurring basis | Corporate debt securities |  |
Financial assets and financial liabilities measured at fair value |  |
Debt securities available for sale | 272,407 | 293,653
Recurring basis | Securities Equity Investments [Member] |  |
Financial assets and financial liabilities measured at fair value |  |
Equity securities |  | 13,571
Recurring basis | Level 2 |  |
Financial assets and financial liabilities measured at fair value |  |
Equity securities | 11,264 |
Less loans held for sale |  | 23,875
Recurring basis | Level 2 | Derivative assets |  |
Financial assets and financial liabilities measured at fair value |  |
Derivative asset | 25,126 | 20,314
Recurring basis | Level 2 | Derivative liabilities |  |
Financial assets and financial liabilities measured at fair value |  |
Derivative liability | 43,074 | 21,501
Recurring basis | Level 2 | U.S. Treasury securities |  |
Financial assets and financial liabilities measured at fair value |  |
Debt securities available for sale | 147,140 | 165,762
Recurring basis | Level 2 | Obligations of U.S. government corporations and agencies |  |
Financial assets and financial liabilities measured at fair value |  |
Debt securities available for sale | 29,839 | 38,470
Recurring basis | Level 2 | Obligations of states and political subdivisions |  |
Financial assets and financial liabilities measured at fair value |  |
Debt securities available for sale | 287,612 | 306,869
Recurring basis | Level 2 | Asset-backed securities |  |
Financial assets and financial liabilities measured at fair value |  |
Debt securities available for sale | 468,129 | 492,186
Recurring basis | Level 2 | Commercial mortgage-backed securities |  |
Financial assets and financial liabilities measured at fair value |  |
Debt securities available for sale | 98,362 | 614,998
Recurring basis | Level 2 | Residential mortgage-backed securities |  |
Financial assets and financial liabilities measured at fair value |  |
Debt securities available for sale | 1,441,157 | 2,069,313
Recurring basis | Level 2 | Corporate debt securities |  |
Financial assets and financial liabilities measured at fair value |  |
Debt securities available for sale | 272,407 | 293,653
Recurring basis | Level 2 | Securities Equity Investments [Member] |  |
Financial assets and financial liabilities measured at fair value |  |
Equity securities |  | $ 13,571
Recurring basis | Level 3 | Derivative assets |  |
Financial assets and financial liabilities measured at fair value |  |
Derivative asset | $ 3 |

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