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Real Estate Securities - Schedule of Real Estate Securities Portfolio (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]
Current Face	$ 265,170	$ 224,214
Premium / (Discount)	(45,465)	(49,774)
Amortized Cost	255,799	207,992
Gross Unrealized Gains	16,907	8,795
Gross Unrealized Losses	(12,402)	(15,427)
Fair Value	$ 260,304	$ 201,360
Weighted Average Coupon	4.55%	3.62%
Weighted Average Yield	9.89%	11.58%
Weighted Average Life (Years)	4 years 11 months 4 days	5 years 2 months 12 days
Residential Portfolio Segment
Debt Securities, Available-for-sale [Line Items]
Unpaid Principal Balance	$ 8,251,113	$ 6,781,862
Loans at fair value	8,199,296	6,417,895
Total Non-Agency RMBS | Residential Portfolio Segment
Debt Securities, Available-for-sale [Line Items]
Current Face	182,208	123,318
Premium / (Discount)	(8,450)	(7,895)
Amortized Cost	193,222	128,458
Gross Unrealized Gains	10,844	5,310
Gross Unrealized Losses	(2,685)	(6,189)
Fair Value	$ 201,381	$ 127,579
Weighted Average Coupon	4.09%	3.08%
Weighted Average Yield	8.82%	9.40%
Weighted Average Life (Years)	5 years 4 months 20 days	5 years 7 months 24 days
Non-QM Loans | Residential Portfolio Segment
Debt Securities, Available-for-sale [Line Items]
Current Face	$ 48,814	$ 49,516
Premium / (Discount)	(2,160)	(2,772)
Amortized Cost	48,526	49,015
Gross Unrealized Gains	816	1,678
Gross Unrealized Losses	(2,379)	(5,544)
Fair Value	$ 46,963	$ 45,149
Weighted Average Coupon	3.11%	2.83%
Weighted Average Yield	6.66%	7.65%
Weighted Average Life (Years)	3 years 6 months 25 days	4 years 7 months 13 days
Real estate securities notional amount	$ 66,300	$ 85,600
Retained securities amount	42,400	40,300
Unpaid Principal Balance	36,578	13,098
Loans at fair value	35,108	12,279
Agency-Eligible Loans | Residential Portfolio Segment
Debt Securities, Available-for-sale [Line Items]
Current Face	44,491	51,861
Premium / (Discount)	(2,656)	(3,062)
Amortized Cost	42,439	49,488
Gross Unrealized Gains	1,841	1,555
Gross Unrealized Losses	(117)	(148)
Fair Value	$ 44,163	$ 50,895
Weighted Average Coupon	3.57%	3.45%
Weighted Average Yield	7.41%	7.47%
Weighted Average Life (Years)	6 years 8 months 26 days	6 years 10 months 28 days
Real estate securities notional amount	$ 40,400	$ 50,400
Retained securities amount	42,200	48,200
Unpaid Principal Balance	20,524	101,570
Loans at fair value	21,149	102,145
Home Equity Loans | Residential Portfolio Segment
Debt Securities, Available-for-sale [Line Items]
Current Face	84,647	15,526
Premium / (Discount)	(2,018)	640
Amortized Cost	99,617	26,076
Gross Unrealized Gains	7,514	1,445
Gross Unrealized Losses	(189)	(491)
Fair Value	$ 106,942	$ 27,030
Weighted Average Coupon	5.55%	3.40%
Weighted Average Yield	10.47%	16.36%
Weighted Average Life (Years)	5 years 6 months 3 days	5 years 3 months 3 days
Real estate securities notional amount	$ 249,100	$ 163,300
Retained securities amount	78,700
Unpaid Principal Balance	135,804	99,863
Loans at fair value	142,339	103,964
Prime Jumbo Loans | Residential Portfolio Segment
Debt Securities, Available-for-sale [Line Items]
Current Face	4,256	6,415
Premium / (Discount)	(1,616)	(2,701)
Amortized Cost	2,640	3,879
Gross Unrealized Gains	673	632
Gross Unrealized Losses	0	(6)
Fair Value	$ 3,313	$ 4,505
Weighted Average Coupon	4.49%	0.97%
Weighted Average Yield	8.82%	9.41%
Weighted Average Life (Years)	18 years 4 months 9 days	7 years 11 months 12 days
Real estate securities notional amount		$ 28,300
Legacy WMC CMBS
Debt Securities, Available-for-sale [Line Items]
Current Face	$ 82,962	100,896
Premium / (Discount)	(37,015)	(41,879)
Amortized Cost	45,947	59,017
Gross Unrealized Gains	5,814	2,577
Gross Unrealized Losses	(9,196)	(8,809)
Fair Value	$ 42,565	$ 52,785
Weighted Average Coupon	5.95%	5.13%
Weighted Average Yield	15.30%	16.74%
Weighted Average Life (Years)	1 year 8 months 23 days	1 year 9 months 7 days
Unpaid Principal Balance	$ 23,500	$ 23,500
Loans at fair value	6,300	6,000
Agency RMBS Interest Only
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	16,630	20,517
Gross Unrealized Gains	249	908
Gross Unrealized Losses	(521)	(429)
Fair Value	$ 16,358	$ 20,996
Weighted Average Coupon	4.57%	4.32%
Weighted Average Yield	7.30%	10.35%
Weighted Average Life (Years)	5 years 2 months 1 day	6 years 6 months 18 days
Agency RMBS Interest Only | Residential Portfolio Segment
Debt Securities, Available-for-sale [Line Items]
Real estate securities notional amount	$ 85,000	$ 107,200

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