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Fair Value Measurements - Schedule of Sensitivity of Loans HFS at Fair Value to Adverse Changes in Key Assumptions (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2026 | Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held for sale at fair value | $ 1,773,052 | $ 1,762,396
Loans Held For Sale |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held for sale at fair value | 1,773,052 | 1,762,396
Discount rates, impact of 100 basis point increase | (19,743) | (21,458)
Discount rates, impact of 200 basis point increase | (39,096) | (42,471)
Expected credit loss rates on underlying loans, 10% adverse change | (22,606) | (20,970)
Expected credit loss rates on underlying loans, 20% adverse change | (45,403) | (41,766)
Expected prepayment rates, 10% adverse change | (7,760) | (5,703)
Expected prepayment rates, 20% adverse change | $ (14,574) | $ (10,546)
Loans Held For Sale | Expected weighted-average life |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Expected remaining weighted-average life (in years) | 1 year 2 months 12 days | 1 year 4 months 24 days

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