Secured Financing Agreements - Schedule of Secured Financing Agreements (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Assets Sold under Agreements to Repurchase [Line Items]
Secured financing agreements outstanding principal secured by:	$ 2,994,191	$ 2,824,371
Repurchase Agreements
Assets Sold under Agreements to Repurchase [Line Items]
Secured financing agreements outstanding principal secured by:	3,005,806	2,842,160
Average balance of Secured financing agreements secured by:	2,902,606	2,947,221
Debt issuance costs, net	1,000
Repurchase Agreements | Asset Pledged as Collateral
Assets Sold under Agreements to Repurchase [Line Items]
MBS pledged as collateral at fair value on Secured financing agreements:	4,222,227	4,086,097
Repurchase Agreements | Agency RMBS
Assets Sold under Agreements to Repurchase [Line Items]
Secured financing agreements outstanding principal secured by:	482,907	402,644
Average balance of Secured financing agreements secured by:	$ 396,246	$ 540,735
Average borrowing rate of Secured financing agreements secured by:	4.52%	4.83%
Average remaining maturity of Secured financing agreements secured by:	26 days	16 days
Average original maturity of Secured financing agreements secured by:	39 days	43 days
Repurchase Agreements | Agency RMBS | Asset Pledged as Collateral
Assets Sold under Agreements to Repurchase [Line Items]
MBS pledged as collateral at fair value on Secured financing agreements:	$ 507,117	$ 423,768
Repurchase Agreements | Agency CMBS
Assets Sold under Agreements to Repurchase [Line Items]
Secured financing agreements outstanding principal secured by:	30,542	29,123
Average balance of Secured financing agreements secured by:	$ 29,972	$ 35,555
Average borrowing rate of Secured financing agreements secured by:	4.48%	4.77%
Average remaining maturity of Secured financing agreements secured by:	7 days	8 days
Average original maturity of Secured financing agreements secured by:	31 days	33 days
Repurchase Agreements | Agency CMBS | Asset Pledged as Collateral
Assets Sold under Agreements to Repurchase [Line Items]
MBS pledged as collateral at fair value on Secured financing agreements:	$ 29,314	$ 29,146
Repurchase Agreements | Non-agency MBS and Loans held for investment
Assets Sold under Agreements to Repurchase [Line Items]
Secured financing agreements outstanding principal secured by:	2,492,357	2,410,393
Average balance of Secured financing agreements secured by:	$ 2,476,388	$ 2,370,931
Average borrowing rate of Secured financing agreements secured by:	6.57%	6.78%
Average remaining maturity of Secured financing agreements secured by:	356 days	237 days
Average original maturity of Secured financing agreements secured by:	381 days	267 days
Debt issuance costs, net	$ 1,000
Repurchase Agreements | Non-agency MBS and Loans held for investment | Asset Pledged as Collateral
Assets Sold under Agreements to Repurchase [Line Items]
MBS pledged as collateral at fair value on Secured financing agreements:	$ 3,685,796	$ 3,633,183