Commitments and Contingencies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Other Commitments [Line Items]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	$ 957
Operating Leases, Future Minimum Payments, Due in Two Years	816
Operating Leases, Future Minimum Payments, Due in Three Years	802
Operating Leases, Future Minimum Payments, Due in Four Years	695
Operating Leases, Future Minimum Payments, Due in Five Years	473
Operating Leases, Future Minimum Payments, Due Thereafter	481
Operating Leases, Future Minimum Payments Due	4,224
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(700)
Operating Lease, Liability	$ 3,524	$ 4,058
Operating Lease, Weighted Average Remaining Lease Term	5 years 1 month 6 days	5 years 9 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	7.31%	7.20%
Operating Lease, Right-of-Use Asset	$ 3,279	$ 3,838
Operating Lease, Expense	1,200	200
Loan commitments, at fair value	2,584	3,060
Investment in Other Loan Originator
Other Commitments [Line Items]
Unfunded commitment	5,500	6,500
Mortgage Originator
Other Commitments [Line Items]
Maximum guarantees	50,000
Unfunded commitment	475,400
Total Purchase Commitment	500,000
Amount outstanding under guarantee	9,500
Non-Exchange Traded Equity Investment in Mortgage Originators [Member] | Related party mortgage originator (with flow mortgage loan purchase and sale agreement) [Member]
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
Drawn down amount being guaranteed	1,000	10,800
Reverse mortgage loans
Other Commitments [Line Items]
Contractual Obligation	1,900,000	1,700,000
Residential mortgage loans
Other Commitments [Line Items]
Unfunded commitment	288,000	175,700
Residential mortgage loans | Investment in unconsolidated entities
Other Commitments [Line Items]
Unfunded commitment		181,400
Total Purchase Commitment	650,000
Corporate loan [Member]
Other Commitments [Line Items]
Unfunded commitment	3,000	4,200
Corporate loan [Member] | Line of Credit
Other Commitments [Line Items]
Unfunded commitment	900	$ 900
Lending Commitment	$ 1,000