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Derivatives and Hedging Activities - Schedule of Notional Amount and Fair Value of Derivatives Designated and Not Designated as Hedging Instruments (Details) - USD ($) $ in Thousands | Jun. 30, 2026 | Dec. 31, 2025
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Derivative, notional amount | $ 4,295,168 | $ 2,392,483
Credit risk derivative asset, fair value | 85,957 | 57,823
Credit risk derivative liability, fair value | 75,538 | 54,069
Credit default swap |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, notional amount | 71,200 | 75,800
Derivatives Not Designated as Hedging Instruments | Interest rate swaps and cap contracts |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, notional amount | 2,254,358 | 1,537,760
Credit risk derivative asset, fair value | 73,854 | 53,768
Credit risk derivative liability, fair value | 73,877 | 53,809
Derivatives Not Designated as Hedging Instruments | Credit default swap |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, notional amount | 71,246 | 75,802
Credit risk derivative asset, fair value | 0 | 0
Credit risk derivative liability, fair value | 844 | 234
Derivatives Designated as Hedging Instruments | Cash Flow Hedging | Interest Rate Option |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, notional amount | 1,320,000 |
Credit risk derivative asset, fair value | 0 |
Credit risk derivative liability, fair value | 817 |
Derivatives Designated as Hedging Instruments | Cash Flow Hedging | Interest Rate Swap |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, notional amount |  | 100,000
Credit risk derivative asset, fair value |  | 0
Credit risk derivative liability, fair value |  | 0
Derivatives Designated as Hedging Instruments | Fair Value Hedging | Interest Rate Swap |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, notional amount | 649,564 | 678,921
Credit risk derivative asset, fair value | 12,103 | 4,055
Credit risk derivative liability, fair value | $ 0 | $ 26

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