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Commitments and Contingencies (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Other Commitments [Line Items]
Loan commitments, at fair value	$ 10,207		$ 9,124
Operating Lease, Expense	300	$ 300
Operating Lease, Right-of-Use Asset	3,882		3,992
Operating Lease, Liability	$ 4,387		$ 4,502
Operating Lease, Weighted Average Remaining Lease Term	6 years 9 months 18 days		7 years
Operating Lease, Weighted Average Discount Rate, Percent	9.24%		9.22%
Operating Leases, Future Minimum Payments, Due in Two Years	$ 724
Operating Leases, Future Minimum Payments, Due in Three Years	971
Operating Leases, Future Minimum Payments, Due in Four Years	964
Operating Leases, Future Minimum Payments, Due in Five Years	950
Lessee, Operating Lease, Liability, to be Paid, Year Four	479
Operating Leases, Future Minimum Payments, Due Thereafter	2,039
Operating Leases, Future Minimum Payments Due	6,127
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(1,740)
Affiliated REIT
Other Commitments [Line Items]
Purchase Commitment, Amount Contributed	25,000
Investment in Other Loan Originator
Other Commitments [Line Items]
Unfunded commitment	29,100		$ 25,000
Mortgage Originator
Other Commitments [Line Items]
Unfunded commitment	318,500		334,400
Total Purchase Commitment	500,000
Mortgage loan originator
Other Commitments [Line Items]
Loan Purchase Commitments, at Fair Value	(6,400)		(41)
Mortgage loan originator \| Equity Method Investee
Other Commitments [Line Items]
Loan Purchase Commitments, at Fair Value	(800)		(78)
Non-Exchange Traded Equity Investment in Mortgage Originators [Member] \| Related party mortgage originator (with flow mortgage loan purchase and sale agreement)
Other Commitments [Line Items]
Maximum guarantees	15,000		15,000
Equity investments in securitization-related risk retention vehicle
Other Commitments [Line Items]
Maximum guarantees	15,500		15,500
Drawn down amount being guaranteed			1,000
Reverse mortgage loans
Other Commitments [Line Items]
Contractual Obligation	2,400,000		2,300,000
Loan Purchase Commitments
Other Commitments [Line Items]
UPB of loans committed to purchase	1,045,000		648,900
Loan Purchase Commitments \| Equity Method Investee
Other Commitments [Line Items]
UPB of loans committed to purchase	155,000		147,500
Loan Purchase Commitments \| Mortgage loan originator
Other Commitments [Line Items]
Loan Purchase Commitments, at Fair Value	(100)		(63)
UPB of loans committed to purchase	57,200		67,000
Loan Purchase Commitments \| Mortgage loan originator B
Other Commitments [Line Items]
Loan Purchase Commitments, at Fair Value	(200)		(13)
UPB of loans committed to purchase	22,900		20,000
Residential mortgage loans
Other Commitments [Line Items]
Unfunded commitment	337,000		267,900
Corporate loan [Member]
Other Commitments [Line Items]
Unfunded commitment	28,000		37,700
Corporate loan [Member] \| Line of Credit
Other Commitments [Line Items]
Unfunded commitment	200		$ 800
Lending Commitment	$ 1,000