Loans Receivable - Loan Losses (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Sep. 30, 2021 loan	Dec. 31, 2022 USD ($) loan	Dec. 31, 2021 USD ($) loan
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Reserve for loan losses, beginning of period		$ 1,813	$ 10,280
Provision for expected loan losses		6,534	1,689
Expected loan losses related to loans sold or repaid		(67)	(10,156)
Reserve for loan losses, end of period		$ 8,280	$ 1,813
Number of loans sold or repaid | loan	1	2	6
Credit loss reserve on unfunded loan commitments		$ 800	$ 300
Secured Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Reserve for loan losses, beginning of period		1,804	3,152
Provision for expected loan losses		6,527	793
Expected loan losses related to loans sold or repaid		(51)	(2,141)
Reserve for loan losses, end of period		8,280	1,804
Mezzanine and Other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Reserve for loan losses, beginning of period		9	7,128
Provision for expected loan losses		7	896
Expected loan losses related to loans sold or repaid		(16)	(8,015)
Reserve for loan losses, end of period		$ 0	$ 9