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Fair Value Measurements Assets and Liabilities Measured and Recorded (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | --- | ---
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Equity Securities, FV-NI | $ 3 | $ 1 |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 2,246,839 | 2,346,864 |  |
Other Borrowings, Fair Value Disclosure | 118,838 | 123,116 |  |
Cash Flow Hedging |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Cash Flow Hedge Derivative Instrument Assets at Fair Value | 1,400 |  |  |
Credit-Link Notes |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Other Borrowings, Fair Value Disclosure | 118,838 | 123,116 | $ 132,030 | $ 0
Fair Value, Recurring |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Cash Flow Hedge Derivative Instrument Assets at Fair Value | 1,442 |  |  |
Warrants Not Settleable in Cash, Fair Value Disclosure | 3,763 | 3,689 |  |
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value |  | 4,090 |  |
Derivative Liability, Fair Value of Collateral | 7,562 | 6,459 |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 2,246,839 |  |  |
Fair Value, Recurring | Government agency and government-sponsored enterprise pass through securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 861,840 | 1,187,609 |  |
Fair Value, Recurring | Commercial Mortgage Backed Securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 51,564 | 253,306 |  |
Fair Value, Recurring | Government agency and government-sponsored enterprise collateralized mortgage obligations [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 446,631 | 284,334 |  |
Fair Value, Recurring | Municipal Securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 594 | 28,083 |  |
Fair Value, Recurring | US Treasury Securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) |  | 4,968 |  |
Fair Value, Recurring | Corporate Debt Securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 257,712 | 267,232 |  |
Fair Value, Recurring | Private Label Collateralized Mortgage Obligations [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 316,910 | 158,412 |  |
Fair Value, Recurring | Collateralized Loan Obligations [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 279,416 | 108,416 |  |
Fair Value, Recurring | Mortgage-backed Securities, Issued by Private Enterprises |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 12,372 | 20,813 |  |
Fair Value, Recurring | Asset-backed Securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 15,600 | 19,952 |  |
Fair Value, Recurring | SBA asset-backed securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 4,200 | 13,739 |  |
Level 1 | Fair Value, Recurring |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Cash Flow Hedge Derivative Instrument Assets at Fair Value | 0 |  |  |
Warrants Not Settleable in Cash, Fair Value Disclosure | 0 | 0 |  |
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value |  | 0 |  |
Derivative Liability, Fair Value of Collateral | 0 | 0 |  |
Equity Securities, FV-NI | 3 | 1 |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 0 | 4,968 |  |
Other Borrowings | 0 | 0 |  |
Level 1 | Fair Value, Recurring | Government agency and government-sponsored enterprise pass through securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 0 | 0 |  |
Level 1 | Fair Value, Recurring | Commercial Mortgage Backed Securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 0 | 0 |  |
Level 1 | Fair Value, Recurring | Government agency and government-sponsored enterprise collateralized mortgage obligations [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 0 | 0 |  |
Level 1 | Fair Value, Recurring | Municipal Securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 0 | 0 |  |
Level 1 | Fair Value, Recurring | US Treasury Securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) |  | 4,968 |  |
Level 1 | Fair Value, Recurring | Corporate Debt Securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 0 | 0 |  |
Level 1 | Fair Value, Recurring | Private Label Collateralized Mortgage Obligations [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 0 | 0 |  |
Level 1 | Fair Value, Recurring | Collateralized Loan Obligations [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 0 | 0 |  |
Level 1 | Fair Value, Recurring | Mortgage-backed Securities, Issued by Private Enterprises |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 0 | 0 |  |
Level 1 | Fair Value, Recurring | Asset-backed Securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 0 | 0 |  |
Level 1 | Fair Value, Recurring | SBA asset-backed securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 0 | 0 |  |
Level 2 | Fair Value, Recurring |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Cash Flow Hedge Derivative Instrument Assets at Fair Value | 1,442 |  |  |
Warrants Not Settleable in Cash, Fair Value Disclosure | 0 | 0 |  |
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value |  | 4,090 |  |
Derivative Liability, Fair Value of Collateral | 7,562 | 6,459 |  |
Equity Securities, FV-NI | 0 | 0 |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 2,244,709 | 2,301,647 |  |
Other Borrowings | 0 | 0 |  |
Level 2 | Fair Value, Recurring | Government agency and government-sponsored enterprise pass through securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 861,840 | 1,187,609 |  |
Level 2 | Fair Value, Recurring | Commercial Mortgage Backed Securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 51,564 | 253,306 |  |
Level 2 | Fair Value, Recurring | Government agency and government-sponsored enterprise collateralized mortgage obligations [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 446,631 | 284,334 |  |
Level 2 | Fair Value, Recurring | Municipal Securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 594 | 28,083 |  |
Level 2 | Fair Value, Recurring | US Treasury Securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) |  | 0 |  |
Level 2 | Fair Value, Recurring | Corporate Debt Securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 255,582 | 226,983 |  |
Level 2 | Fair Value, Recurring | Private Label Collateralized Mortgage Obligations [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 316,910 | 158,412 |  |
Level 2 | Fair Value, Recurring | Collateralized Loan Obligations [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 279,416 | 108,416 |  |
Level 2 | Fair Value, Recurring | Mortgage-backed Securities, Issued by Private Enterprises |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 12,372 | 20,813 |  |
Level 2 | Fair Value, Recurring | Asset-backed Securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 15,600 | 19,952 |  |
Level 2 | Fair Value, Recurring | SBA asset-backed securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 4,200 | 13,739 |  |
Level 3 |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Warrants Not Settleable in Cash, Fair Value Disclosure | 3,763 | 3,689 | $ 4,048 | $ 3,555
Level 3 | Fair Value, Recurring |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Cash Flow Hedge Derivative Instrument Assets at Fair Value | 0 |  |  |
Warrants Not Settleable in Cash, Fair Value Disclosure | 3,763 | 3,689 |  |
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value |  | 0 |  |
Derivative Liability, Fair Value of Collateral | 0 | 0 |  |
Equity Securities, FV-NI | 0 | 0 |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 2,130 | 40,249 |  |
Other Borrowings | 118,838 | 123,116 |  |
Level 3 | Fair Value, Recurring | Government agency and government-sponsored enterprise pass through securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 0 | 0 |  |
Level 3 | Fair Value, Recurring | Commercial Mortgage Backed Securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 0 | 0 |  |
Level 3 | Fair Value, Recurring | Government agency and government-sponsored enterprise collateralized mortgage obligations [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 0 | 0 |  |
Level 3 | Fair Value, Recurring | Municipal Securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 0 | 0 |  |
Level 3 | Fair Value, Recurring | US Treasury Securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) |  | 0 |  |
Level 3 | Fair Value, Recurring | Corporate Debt Securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 2,130 | 40,249 |  |
Level 3 | Fair Value, Recurring | Private Label Collateralized Mortgage Obligations [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 0 | 0 |  |
Level 3 | Fair Value, Recurring | Collateralized Loan Obligations [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 0 | 0 |  |
Level 3 | Fair Value, Recurring | Mortgage-backed Securities, Issued by Private Enterprises |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 0 | 0 |  |
Level 3 | Fair Value, Recurring | Asset-backed Securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | 0 | 0 |  |
Level 3 | Fair Value, Recurring | SBA asset-backed securities [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
(amortized cost of $2,526,644 and $2,699,255, respectively) | $ 0 | $ 0 |  |

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