Loans - Schedule of Company's Residential Mortgage Loan Portfolio and Commercial Loan Portfolio (Details) - Residential Portfolio Segment - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2026	Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	$ 7,526,027	$ 8,251,113
Premium (Discount)	115,088	117,484
Amortized Cost	7,641,115	8,368,597
Gross Unrealized Gains	62,653	111,061
Gross Unrealized Losses	(322,308)	(280,362)
Legacy WMC Commercial Loans	$ 7,381,460	$ 8,199,296
Weighted Average Coupon	6.24%	6.32%
Weighted Average Yield	5.89%	6.00%
Weighted Average Life (Years)	6 years 11 months 12 days	7 years 3 days
Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	$ 253,882	$ 194,046
Premium (Discount)	8,229	6,181
Amortized Cost	262,111	200,227
Gross Unrealized Gains	938	1,617
Gross Unrealized Losses	(764)	(2,167)
Legacy WMC Commercial Loans	$ 262,285	$ 199,677
Weighted Average Coupon	8.65%	8.27%
Weighted Average Yield	7.78%	7.22%
Weighted Average Life (Years)	4 years 8 months 23 days	4 years 8 months 4 days
Residential mortgage loans \| Securitized residential mortgage loans, at fair value
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	$ 7,272,145	$ 8,057,067
Premium (Discount)	106,859	111,303
Amortized Cost	7,379,004	8,168,370
Gross Unrealized Gains	61,715	109,444
Gross Unrealized Losses	(321,544)	(278,195)
Legacy WMC Commercial Loans	$ 7,119,175	$ 7,999,619
Weighted Average Coupon	6.16%	6.27%
Weighted Average Yield	5.82%	5.97%
Weighted Average Life (Years)	7 years 10 days	7 years 25 days
Non-Agency Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	$ 7,179	$ 36,578
Premium (Discount)	114	638
Amortized Cost	7,293	37,216
Gross Unrealized Gains	0	18
Gross Unrealized Losses	(279)	(2,126)
Legacy WMC Commercial Loans	$ 7,014	$ 35,108
Weighted Average Coupon	6.42%	6.14%
Weighted Average Yield	4.40%	3.62%
Weighted Average Life (Years)	4 years 10 months 9 days	4 years 2 months 1 day
Non-Agency Loans \| Securitized residential mortgage loans, at fair value
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	$ 6,397,864	$ 7,026,365
Premium (Discount)	60,687	59,755
Amortized Cost	6,458,551	7,086,120
Gross Unrealized Gains	53,198	84,870
Gross Unrealized Losses	(299,731)	(266,118)
Legacy WMC Commercial Loans	$ 6,212,018	$ 6,904,872
Weighted Average Coupon	5.79%	5.87%
Weighted Average Yield	5.65%	5.74%
Weighted Average Life (Years)	7 years 4 months 9 days	7 years 3 months 18 days
Home Equity Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	$ 225,684	$ 135,804
Premium (Discount)	8,376	5,913
Amortized Cost	234,060	141,717
Gross Unrealized Gains	222	663
Gross Unrealized Losses	(472)	(41)
Legacy WMC Commercial Loans	$ 233,810	$ 142,339
Weighted Average Coupon	8.88%	9.07%
Weighted Average Yield	7.73%	7.77%
Weighted Average Life (Years)	4 years 9 months 14 days	4 years 9 months 29 days
Home Equity Loans \| Securitized residential mortgage loans, at fair value
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	$ 726,148	$ 874,718
Premium (Discount)	54,897	61,241
Amortized Cost	781,045	935,959
Gross Unrealized Gains	8,517	24,574
Gross Unrealized Losses	(8,642)	0
Legacy WMC Commercial Loans	$ 780,920	$ 960,533
Weighted Average Coupon	9.80%	9.81%
Weighted Average Yield	7.23%	7.70%
Weighted Average Life (Years)	4 years 5 months 23 days	5 years 5 months 4 days
Re- and Non-Performing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	$ 850	$ 1,140
Premium (Discount)	(547)	(696)
Amortized Cost	303	444
Gross Unrealized Gains	507	637
Gross Unrealized Losses	0	0
Legacy WMC Commercial Loans	$ 810	$ 1,081
Weighted Average Life (Years)	1 year 10 days	1 year 1 month 13 days
Re- and Non-Performing Loans \| Securitized residential mortgage loans, at fair value
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	$ 148,133	$ 155,984
Premium (Discount)	(8,725)	(9,693)
Amortized Cost	139,408	146,291
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(13,171)	(12,077)
Legacy WMC Commercial Loans	$ 126,237	$ 134,214
Weighted Average Coupon	4.04%	4.22%
Weighted Average Yield	5.91%	5.93%
Weighted Average Life (Years)	5 years 2 months 4 days	5 years 6 months 14 days
Agency-Eligible Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	$ 20,169	$ 20,524
Premium (Discount)	286	326
Amortized Cost	20,455	20,850
Gross Unrealized Gains	209	299
Gross Unrealized Losses	(13)	0
Legacy WMC Commercial Loans	$ 20,651	$ 21,149
Weighted Average Coupon	6.86%	6.83%
Weighted Average Yield	6.21%	6.34%
Weighted Average Life (Years)	4 years 2 months 12 days	4 years 9 months 29 days

The amount represents the loan receivables for weighted average coupon rate for the during period.

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The amount represent the loans receivable gross unrealized gains for the during period.

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The amount represent the loans receivable gross unrealized loss for the during period.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of unamortized purchase premium (discount) on financing receivable. Excludes financing receivable covered under loss sharing agreement.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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This is the result of the principal amount outstanding of total loans managed or securitized less securitized loans and loans that are in the process of being securitized.

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