Annual report pursuant to Section 13 and 15(d)

Repurchase Agreements - Underlying Assets of Repurchase Agreements when Amount of Repurchase Agreements Exceeds 10 Percent of Assets (Details)

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Repurchase Agreements - Underlying Assets of Repurchase Agreements when Amount of Repurchase Agreements Exceeds 10 Percent of Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Assets Sold under Agreements to Repurchase [Line Items]    
Total $ 8,701,825 $ 8,650,229
Repurchase agreements 7,805,057 8,020,207
Available-for-sale securities, at fair value    
Assets Sold under Agreements to Repurchase [Line Items]    
Total 7,097,561 8,126,028
Mortgage servicing rights, at fair value    
Assets Sold under Agreements to Repurchase [Line Items]    
Total 1,355,639 463,529
Repurchase agreements 755,000 272,572
Mortgage servicing rights, at fair value | Variable Funding Note    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements 755,000 214,000
Mortgage servicing rights, at fair value | Term notes payable    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements   58,600
Restricted cash    
Assets Sold under Agreements to Repurchase [Line Items]    
Total 218,363 12,375
Due from counterparties    
Assets Sold under Agreements to Repurchase [Line Items]    
Total 25,231 36,420
Derivative assets, at fair value    
Assets Sold under Agreements to Repurchase [Line Items]    
Total $ 5,031 $ 11,877