v3.26.3
Securities, at Fair Value - Narrative (Details) - USD ($)
3 Months Ended 6 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Debt Securities, Available-for-sale [Line Items]                
Securities, at fair value [1] $ 3,977,565,000         $ 3,977,565,000   $ 3,360,280,000
Proceeds from sales of securities           618,124,000 $ 20,790,000  
CRT Securities                
Debt Securities, Available-for-sale [Line Items]                
CRT securities 34,300,000         34,300,000   34,900,000
Securities, at fair value 21,200,000         21,200,000   21,700,000
Proceeds from sales of securities       $ 2,600,000        
Realized gain (loss) on securities sold       $ 200,000        
Gross unrealized losses 0         0   0
Non-agency MBS                
Debt Securities, Available-for-sale [Line Items]                
Securities, at fair value 20,100,000         20,100,000   22,100,000
Gross unrealized losses 1,100,000         1,100,000   200,000
Residential Mortgage Securities                
Debt Securities, Available-for-sale [Line Items]                
Securities, at fair value 3,977,565,000         3,977,565,000   3,360,280,000
Proceeds from sales of securities     $ 0   $ 0      
Gross unrealized losses 196,645,000         196,645,000   256,000
Agency MBS                
Debt Securities, Available-for-sale [Line Items]                
Securities, at fair value 3,923,132,000         3,923,132,000   3,303,204,000
Proceeds from sales of securities 750,300,000 $ 18,200,000            
Realized gain (loss) on securities sold (23,800,000) 700,000            
Gross unrealized losses 195,583,000         195,583,000   $ 21,000
AFS securities                
Debt Securities, Available-for-sale [Line Items]                
Gross unrealized losses 0         0    
Allowance for loan loss $ 0 $ 0       $ 0 $ 0  
[1] See Note 6 for information regarding the Company’s pledged assets.