v3.26.3
Loans Held for Sale at Fair Value - Summary of Distribution of Company's Loans Held for Sale at Fair Value (Detail) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans held for sale at fair value $ 2,870,751 $ 2,699,398
Loans Held for Sale at Fair Value [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans pledged to secure Assets sold under agreements to repurchase 2,843,528 2,676,700
GSE Eligible [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans held for sale at fair value [1] 1,974,882 2,232,706
Jumbo [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans held for sale at fair value 464,037 433,027
Non-qualified [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans held for sale at fair value 429,424 30,084
Home Equity Lines of Credit [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans held for sale at fair value 783 942
Repurchased Pursuant to Representations and Warranties [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans held for sale at fair value $ 1,625 $ 2,639
[1] GSE eligibility refers to the eligibility of loans for sale to Fannie Mae or Freddie Mac. The Company sells or finances a portion of
its GSE eligible loan production to or with other investors
.