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Derivatives - Schedule of Interest Rate Hedging Instruments (Details) - USD ($) | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Derivative [Line Items] |  |
Derivative assets | $ 8,461,000 | $ 54,361,000
Derivative liabilities | 2,032,000 | 0
U.S. Treasury futures |  |
Derivative [Line Items] |  |
Derivative Instruments Not Designated as Hedging Instruments, at Carrying Value | 0 |
Derivative liabilities | 34,200,000 | 219,900,000
U.S. Treasury futures | Short position | Not Designated as Hedging Instrument, Economic Hedge |  |
Derivative [Line Items] |  |
Notional balance | 5,395,000,000 | 4,880,000,000
Interest rate swaps |  |
Derivative [Line Items] |  |
Derivative Instruments Not Designated as Hedging Instruments, at Carrying Value | 0 |
Derivative liabilities | 100,000 | 0
Interest rate swaps | Not Designated as Hedging Instrument, Economic Hedge |  |
Derivative [Line Items] |  |
Notional balance | $ 10,000,000 | $ 0
Derivative, Fixed Interest Rate | 4.15% |
Interest rate swaps | Not Designated as Hedging Instrument, Economic Hedge | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |
Derivative [Line Items] |  |
Notional balance | $ 10,000,000 |

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