Consolidation of Variable Interest Entities - Schedule of Carrying Values of Assets and Liabilities of Consolidated VIE, Net of Elimination Entries (Details) - USD ($) $ in Thousands		Sep. 30, 2022		Dec. 31, 2021
Variable Interest Entity [Line Items]
Restricted cash of consolidated VIE		$ 590		$ 1,132
Loans Receivable, Fair Value Disclosure		29,375		29,697
Other Assets		15,003		15,287
Other liabilities of consolidated VIEs		(11,501)		(6,605)
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Cash of consolidated VIEs		560		2,118
Restricted cash of consolidated VIE		1,954	[1]	111	[2]
Loans Receivable, Fair Value Disclosure		203,456		7,442
Other Assets		1,413		547
Secured debt of consolidated VIEs, at fair value		(182,336)		(508)
Other liabilities of consolidated VIEs		(265)		(2)
Net investment in consolidated VIEs		24,782		9,708
Variable Interest Entity, Primary Beneficiary | Business Purpose Residential Mortgage Loans
Variable Interest Entity [Line Items]
Cash of consolidated VIEs		560		2,118
Restricted cash of consolidated VIE		29	[1]	111	[2]
Loans Receivable, Fair Value Disclosure		3,750		7,442
Other Assets		689		547
Secured debt of consolidated VIEs, at fair value		(251)		(508)
Other liabilities of consolidated VIEs		0		(2)
Net investment in consolidated VIEs		4,777		$ 9,708
Variable Interest Entity, Primary Beneficiary | Residential Mortgage Loans
Variable Interest Entity [Line Items]
Restricted cash of consolidated VIE	[1]	1,925
Loans Receivable, Fair Value Disclosure		199,706
Other Assets		724
Secured debt of consolidated VIEs, at fair value		(182,085)
Other liabilities of consolidated VIEs		(265)
Net investment in consolidated VIEs		$ 20,005

[1] Restricted cash represents cash collected by the trust that must be used solely to satisfy the liabilities of the VIE in the month following collection.

[2] Restricted cash represents cash collected by the trust that must be used solely to satisfy the liabilities of the VIE in the month following collection.