Commitments and Contingencies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Oct. 03, 2022	Dec. 31, 2021
Other Commitments [Line Items]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	$ 943
Operating Leases, Future Minimum Payments, Due in Two Years	836
Operating Leases, Future Minimum Payments, Due in Three Years	798
Operating Leases, Future Minimum Payments, Due in Four Years	793
Operating Leases, Future Minimum Payments, Due in Five Years	695
Operating Leases, Future Minimum Payments, Due Thereafter	953
Operating Leases, Future Minimum Payments Due	5,018
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(960)
Operating Lease, Liability	$ 4,058
Operating Lease, Weighted Average Remaining Lease Term	5 years 9 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	7.20%
Operating Lease, Right-of-Use Asset	$ 3,838		$ 0
Operating Lease, Expense	200
Loan commitments, at fair value	3,060	$ 3,090	0
Equity investments in securitization-related risk retention vehicle
Other Commitments [Line Items]
Maximum guarantees	15,500
Drawn down amount being guaranteed	10,800		15,500
Reverse mortgage loans
Other Commitments [Line Items]
Contractual Obligation	1,700,000
Related party mortgage originator (with flow mortgage loan purchase and sale agreement) [Member] | Non-Exchange Traded Equity Investment in Mortgage Originators [Member]
Other Commitments [Line Items]
Maximum guarantees	15,000
Drawn down amount being guaranteed			8,400
Investment in Other Loan Originator
Other Commitments [Line Items]
Unfunded commitment	6,500		3,000
Residential mortgage loans
Other Commitments [Line Items]
Unfunded commitment	175,700		43,700
Residential mortgage loans | Investment in unconsolidated entities
Other Commitments [Line Items]
Unfunded commitment	181,400		603,600
Total Purchase Commitment	650,000
Corporate loan [Member]
Other Commitments [Line Items]
Unfunded commitment	4,200		$ 5,400
Corporate loan [Member] | Line of Credit
Other Commitments [Line Items]
Unfunded commitment	900
Lending Commitment	$ 1,000