Mortgages Payable - Additional Information (Details) $ in Thousands, £ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) mortgage	Dec. 31, 2022 USD ($) property mortgage	Dec. 31, 2021 USD ($) sterlingDenominatedMortgage	Dec. 31, 2021 GBP (£) sterlingDenominatedMortgage
Debt
Principal payments	$ 22,015	$ 312,234	$ 66,575
Loans assumed	0	45,079	$ 911,525
Mortgages payable
Debt
Principal payments	$ 22,000	$ 312,200
Number of mortgages assumed during period	0	8	1	1
Number of properties assumed during period | property		17
Loans assumed		$ 45,100		£ 31.0
Deferred financing costs	$ 400	800
Mortgages payable | Mortgages repaid in full
Debt
Principal payments	$ 17,400	$ 308,000
Mortgages repaid in full | mortgage	2	12