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Fair Value Measurement - Schedule of Rollforward of Level 3 Assets (Details) - Fair Value, Inputs, Level 3 - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Loans (at fair value) |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Fair value, beginning balance | $ 814,677 | $ 1,080,865 | $ 806,304 | $ 1,156,413
Reclassification of loans |  | 0 |  | 0
Purchases and originations of loans | 929,170 | 569,371 | 1,649,707 | 1,194,609
Sale of loans | (566,077) | (672,325) | (1,139,391) | (1,235,663)
Purchase of loans for immediate resale | 1,933,901 | 268,888 | 2,708,533 | 486,345
Immediate resale of loans | (1,933,901) | (268,888) | (2,708,533) | (486,345)
Repayments received | (127,063) | (107,835) | (233,012) | (200,256)
Charge-offs and changes in fair value recorded in earnings | (42,804) | (49,601) | (83,252) | (95,513)
Other changes | 11,601 | 153 | 19,148 | 1,038
Fair value, ending balance | 1,019,504 | 820,628 | 1,019,504 | 820,628
Loans Held-for- Sale |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Fair value, beginning balance | 347,749 | 763,314 | 405,812 | 830,574
Reclassification of loans |  | (3,189) |  | (3,189)
Purchases and originations of loans | 701,155 | 504,582 | 1,271,809 | 1,083,668
Sale of loans | (548,007) | (672,325) | (1,119,703) | (1,235,663)
Purchase of loans for immediate resale | 1,933,901 | 268,888 | 2,708,533 | 486,345
Immediate resale of loans | (1,933,901) | (268,888) | (2,708,533) | (486,345)
Repayments received | (46,398) | (64,665) | (86,302) | (119,973)
Charge-offs and changes in fair value recorded in earnings | (8,961) | (26,433) | (24,683) | (52,673)
Other changes | 249 | (3,362) | (1,146) | (4,822)
Fair value, ending balance | 445,787 | 497,922 | 445,787 | 497,922
Loans Held-for-Investment |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Fair value, beginning balance | 378,012 | 160,229 | 297,543 | 146,768
Reclassification of loans |  | 3,189 |  | 3,189
Purchases and originations of loans | 228,015 | 64,789 | 377,898 | 110,941
Sale of loans | (18,070) | 0 | (19,688) | 0
Purchase of loans for immediate resale | 0 | 0 | 0 | 0
Immediate resale of loans | 0 | 0 | 0 | 0
Repayments received | (71,013) | (30,794) | (126,778) | (55,569)
Charge-offs and changes in fair value recorded in earnings | (30,429) | (13,342) | (51,402) | (23,603)
Other changes | 11,352 | 3,515 | 20,294 | 5,860
Fair value, ending balance | 497,867 | 187,586 | 497,867 | 187,586
Loans Held in Consolidated Securitization |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Fair value, beginning balance | 88,916 | 157,322 | 102,949 | 179,071
Reclassification of loans |  |  |  | 0
Purchases and originations of loans | 0 | 0 | 0 | 0
Sale of loans | 0 | 0 | 0 | 0
Purchase of loans for immediate resale | 0 | 0 | 0 | 0
Immediate resale of loans | 0 | 0 | 0 | 0
Repayments received | (9,652) | (12,376) | (19,932) | (24,714)
Charge-offs and changes in fair value recorded in earnings | (3,414) | (9,826) | (7,167) | (19,237)
Other changes | 0 | 0 | 0 | 0
Fair value, ending balance | 75,850 | 135,120 | 75,850 | 135,120
Line of Credit Receivable |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Fair value, beginning balance | 81,780 | 0 | 56,269 | 0
Charge-offs and changes in fair value recorded in earnings | 563 | 44 | 1,063 | 44
Changes in accrued interest | 130 |  | 285 |
Fair value, ending balance | $ 107,456 | $ 8,305 | $ 107,456 | $ 8,305

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