Quarterly report pursuant to Section 13 or 15(d)

Repurchase Agreements - Schedule of Repurchase Agreements by Maturity (Details)

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Repurchase Agreements - Schedule of Repurchase Agreements by Maturity (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements $ 8,763,400 $ 8,020,207
Weighted average borrowing rate 5.40% 5.74%
Agency RMBS    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements $ 8,107,734 $ 7,739,356
Weighted average borrowing rate 5.20% 5.64%
Non-Agency    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements $ 207 $ 233
Weighted average borrowing rate 5.39% 6.36%
Agency Derivatives    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements $ 5,459 $ 8,046
Weighted average borrowing rate 5.88% 6.14%
Mortgage Servicing Rights    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements $ 650,000 $ 272,572
Weighted average borrowing rate 7.99% 7.08%
Within 30 days    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements $ 2,403,179 $ 2,833,162
Within 30 days | Agency RMBS    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 2,398,450 2,772,975
Within 30 days | Non-Agency    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 0 0
Within 30 days | Agency Derivatives    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 4,729 1,615
Within 30 days | Mortgage Servicing Rights    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 0 58,572
30 to 59 days    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 2,180,469 1,918,818
30 to 59 days | Agency RMBS    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 2,180,469 1,918,818
30 to 59 days | Non-Agency    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 0 0
30 to 59 days | Agency Derivatives    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 0 0
30 to 59 days | Mortgage Servicing Rights    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 0 0
60 to 89 days    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 0 2,059,438
60 to 89 days | Agency RMBS    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 0 2,058,518
60 to 89 days | Non-Agency    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 0 233
60 to 89 days | Agency Derivatives    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 0 687
60 to 89 days | Mortgage Servicing Rights    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 0 0
90 to 119 days    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 1,173,329 994,789
90 to 119 days | Agency RMBS    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 1,173,329 989,045
90 to 119 days | Non-Agency    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 0 0
90 to 119 days | Agency Derivatives    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 0 5,744
90 to 119 days | Mortgage Servicing Rights    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 0 0
120 to 364 days    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 2,356,423 214,000
120 to 364 days | Agency RMBS    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 2,355,486 0
120 to 364 days | Non-Agency    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 207 0
120 to 364 days | Agency Derivatives    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 730 0
120 to 364 days | Mortgage Servicing Rights    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 0 $ 214,000
One year and over    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 650,000  
One year and over | Agency RMBS    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 0  
One year and over | Non-Agency    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 0  
One year and over | Agency Derivatives    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 0  
One year and over | Mortgage Servicing Rights    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements $ 650,000