v3.26.3
Fair Value Measurement - Schedule of Rollforward of Level 3 Assets (Details) - Fair Value, Inputs, Level 3 - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Apr. 01, 2026
Mar. 31, 2026
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Loans (at fair value)            
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]            
Fair value, beginning balance     $ 1,064,239 $ 1,019,504 $ 984,552 $ 806,304
Reclassification of loans         0  
Purchases and originations of loans     1,111,539 848,663 3,075,269 2,498,370
Sale of loans     (1,058,928) (451,563) (2,621,452) (1,590,954)
Purchase of loans for immediate resale     2,820,538 1,885,786 7,534,552 4,594,319
Immediate resale of loans     (2,820,538) (1,885,786) (7,534,552) (4,594,319)
Repayments received     (139,068) (157,301) (407,856) (390,313)
Charge-offs and changes in fair value recorded in earnings     (46,331) (45,813) (123,093) (129,065)
Other changes     9,296 16,486 33,327 35,634
Fair value, ending balance     940,747 1,229,976 940,747 1,229,976
Loans Held-for- Sale            
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]            
Fair value, beginning balance     787,154 445,787 393,159 405,812
Reclassification of loans $ 7,800 $ 314,000     306,159  
Purchases and originations of loans     868,498 560,563 2,215,116 1,832,372
Sale of loans     (912,448) (421,618) (2,040,031) (1,541,321)
Purchase of loans for immediate resale     2,820,538 1,885,786 7,534,552 4,594,319
Immediate resale of loans     (2,820,538) (1,885,786) (7,534,552) (4,594,319)
Repayments received     (60,800) (56,756) (170,106) (143,058)
Charge-offs and changes in fair value recorded in earnings     (21,811) (7,354) (47,438) (32,037)
Other changes     (1,269) 1,121 2,465 (25)
Fair value, ending balance     659,324 521,743 659,324 521,743
Loans Held-for-Investment            
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]            
Fair value, beginning balance     240,758 497,867 537,631 297,543
Reclassification of loans         (306,159)  
Purchases and originations of loans     243,041 288,100 860,153 665,998
Sale of loans     (146,480) (29,945) (581,421) (49,633)
Purchase of loans for immediate resale     0 0 0 0
Immediate resale of loans     0 0 0 0
Repayments received     (71,870) (90,705) (216,210) (217,483)
Charge-offs and changes in fair value recorded in earnings     (23,479) (36,514) (72,321) (87,916)
Other changes     10,565 15,365 30,862 35,659
Fair value, ending balance     252,535 644,168 252,535 644,168
Loans Held in Consolidated Securitization            
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]            
Fair value, beginning balance     36,327 75,850 53,762 102,949
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     (6,398) (9,840) (21,540) (29,772)
Charge-offs and changes in fair value recorded in earnings     (1,041) (1,945) (3,334) (9,112)
Other changes     0 0 0 0
Fair value, ending balance     $ 28,888 $ 64,065 $ 28,888 $ 64,065