Segment Information - Summary of third-party real estate services (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment Information
Third-party real estate services revenue, excluding reimbursements	$ 6,384	$ 7,782
Net third-party real estate services, excluding reimbursements	(852)	(4,354)
Third-Party Real Estate Services Segment
Segment Information
Third-party real estate services revenue, excluding reimbursements	6,384	7,782
Third-party real estate services expenses, excluding reimbursements	7,236	12,136
Net third-party real estate services, excluding reimbursements	(852)	(4,354)
Property management fees | Third-Party Real Estate Services Segment
Segment Information
Third-party real estate services revenue, excluding reimbursements	3,361	4,115
Asset management fees | Third-Party Real Estate Services Segment
Segment Information
Third-party real estate services revenue, excluding reimbursements	580	924
Development fees | Third-Party Real Estate Services Segment
Segment Information
Third-party real estate services revenue, excluding reimbursements	523	238
Leasing fees | Third-Party Real Estate Services Segment
Segment Information
Third-party real estate services revenue, excluding reimbursements	654	1,120
Construction management fees | Third-Party Real Estate Services Segment
Segment Information
Third-party real estate services revenue, excluding reimbursements	231	384
Other service revenue | Third-Party Real Estate Services Segment
Segment Information
Third-party real estate services revenue, excluding reimbursements	$ 1,035	$ 1,001