Fair Value Measurements - Items Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Secured And Mezzanine Loans Receivable
Assets:
Loans receivable	$ 156,368
Recurring | Mortgage secured loans receivable
Assets:
Loans receivable	117,684
Recurring | Mezzanine loans receivable
Assets:
Loans receivable	38,684	$ 15,155
Recurring | Level 1 | Secured And Mezzanine Loans Receivable
Assets:
Loans receivable	0
Recurring | Level 1 | Mortgage secured loans receivable
Assets:
Loans receivable	0
Recurring | Level 1 | Mezzanine loans receivable
Assets:
Loans receivable	0	0
Recurring | Level 2 | Secured And Mezzanine Loans Receivable
Assets:
Loans receivable	0
Recurring | Level 2 | Mortgage secured loans receivable
Assets:
Loans receivable	0
Recurring | Level 2 | Mezzanine loans receivable
Assets:
Loans receivable	0	0
Recurring | Level 3 | Secured And Mezzanine Loans Receivable
Assets:
Loans receivable	156,368
Recurring | Level 3 | Mortgage secured loans receivable
Assets:
Loans receivable	117,684
Recurring | Level 3 | Mezzanine loans receivable
Assets:
Loans receivable	$ 38,684	$ 15,155