v3.26.1
Loans Held for Investment at Fair Value - Summary of Distribution of Company's Loans Held for Investment at Fair Value (Detail) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Financing Receivable Recorded Investment [Line Items]    
Loans held for investment at fair value $ 10,867,942 $ 8,532,644
Asset-backed financings at fair value (1) [1] 10,866,292 8,530,939
Loans held for investment at fair value, pledged to creditors 10,866,292 8,530,939
Loans in Variable Interest Entities [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans held for investment at fair value 10,866,292 8,530,939
Distressed [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans held for investment at fair value 1,650 1,705
Non-owner occupied properties [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans held for investment at fair value 7,232,212 6,332,497
Owner occupied properties [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans held for investment at fair value 1,496,337 588,788
Fixed interest rate jumbo loans held in a VIE [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans held for investment at fair value $ 2,137,743 $ 1,609,654
[1] As discussed in Note 6 ‒ Variable Interest Entities ‒ Subordinate and Senior Non-Agency Mortgage-Backed Securities, the
Company holds a portion of the interests in VIEs. At March 31, 2026 and December 31, 2025, $937.7 million and $648.2 million, respectively, of such retained interests were pledged to secure Assets sold under agreements to repurchase.