Real Estate Owned (REO) and Mortgages Payable - Schedule of Mortgages Payable (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Real Estate [Line Items]
Total mortgages payable	$ 1,453	$ 2,449
Wells Fargo Bank
Real Estate [Line Items]
Total mortgages payable	1,453	1,453
East West Bank
Real Estate [Line Items]
Total mortgages payable		$ 996

The aggregate amount of the participating mortgage obligation at the end of the accounting period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=99377297&loc=d3e10013-112621

Name:	us-gaap_ParticipatingMortgageLoansMortgageObligationsAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant