v3.25.1
Fair Value of Financial Instruments - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Assets at Fair Value:    
Derivatives $ 724,827 $ 908,063
Liabilities at Fair Value:    
Obligations to return securities as collateral 506,340 493,433
Derivatives 71,297 1,285
Fair Value, Measurements, Recurring    
Assets at Fair Value:    
Derivatives 724,827 908,063
Liabilities at Fair Value:    
Obligations to return securities as collateral 506,340 493,433
Derivatives 71,297 1,285
Fair Value, Measurements, Recurring | Agency Securities    
Assets at Fair Value:    
Agency Securities 14,442,377 12,439,414
Fair Value, Measurements, Recurring | Level 1    
Assets at Fair Value:    
Derivatives 0 13,300
Liabilities at Fair Value:    
Obligations to return securities as collateral 0 0
Derivatives 45,088 328
Fair Value, Measurements, Recurring | Level 1 | Agency Securities    
Assets at Fair Value:    
Agency Securities 0 0
Fair Value, Measurements, Recurring | Level 2    
Assets at Fair Value:    
Derivatives 724,827 894,763
Liabilities at Fair Value:    
Obligations to return securities as collateral 506,340 493,433
Derivatives 26,209 957
Fair Value, Measurements, Recurring | Level 2 | Agency Securities    
Assets at Fair Value:    
Agency Securities 14,442,377 12,439,414
Fair Value, Measurements, Recurring | Level 3    
Assets at Fair Value:    
Derivatives 0 0
Liabilities at Fair Value:    
Obligations to return securities as collateral 0 0
Derivatives 0 0
Fair Value, Measurements, Recurring | Level 3 | Agency Securities    
Assets at Fair Value:    
Agency Securities $ 0 $ 0