Loans Receivable - Summary of Real Estate Loans Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021		Sep. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Carrying Value	$ 1,339,400
Allowance for credit losses on real estate loans receivable	(164,765)	$ (166,785)		$ (166,802)	$ (224,036)
Real estate loans receivable, net of credit allowance	916,639	1,068,681	[1]
Non-real estate loans	409,796	375,060
Allowance for credit losses on non-real estate loans receivable	(151,800)	(151,433)
Non-real estate loans receivable, net of credit allowance	257,996	223,627
Total loans receivable, net of credit allowance	1,174,635	1,292,308
Mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Carrying Value	709,120	889,556
Other real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Carrying Value	220,484	194,477
Allowance for credit losses on real estate loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses on real estate loans receivable	(12,965)	$ (15,352)
Real estate loans receivable, net of credit allowance	$ 916,639

[1] The consolidated balance sheet at December 31, 2021 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements.