Derivatives and Hedging Activities - Schedule of U.S. Treasury Futures Contracts (Details) - Short - Future - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, notional amount	$ 1,280,000	$ 1,090,000
10 year U.S. Treasury futures
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, notional amount	600,000	420,000
Ultra 10 year U.S. Treasury futures
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, notional amount	375,000	455,000
30 year U.S. Treasury futures
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, notional amount	$ 305,000	$ 215,000

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