Segment Information - Summary of third-party real estate services (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Information
Third-party real estate services revenue, excluding reimbursements	$ 6,850	$ 8,102	$ 13,234	$ 15,884
Net third-party real estate services, excluding reimbursements	1,453	(1,024)	601	(5,378)
Third-Party Real Estate Services Segment
Segment Information
Third-party real estate services revenue, excluding reimbursements	6,850	8,102	13,234	15,884
Third-party real estate services expenses, excluding reimbursements	5,397	9,126	12,633	21,262
Net third-party real estate services, excluding reimbursements	1,453	(1,024)	601	(5,378)
Property management fees \| Third-Party Real Estate Services Segment
Segment Information
Third-party real estate services revenue, excluding reimbursements	3,279	3,874	6,640	7,989
Asset management fees \| Third-Party Real Estate Services Segment
Segment Information
Third-party real estate services revenue, excluding reimbursements	706	1,242	1,286	2,166
Development fees \| Third-Party Real Estate Services Segment
Segment Information
Third-party real estate services revenue, excluding reimbursements	464	421	987	659
Leasing fees \| Third-Party Real Estate Services Segment
Segment Information
Third-party real estate services revenue, excluding reimbursements	1,099	1,128	1,753	2,248
Construction management fees \| Third-Party Real Estate Services Segment
Segment Information
Third-party real estate services revenue, excluding reimbursements	267	177	498	561
Other service revenue \| Third-Party Real Estate Services Segment
Segment Information
Third-party real estate services revenue, excluding reimbursements	$ 1,035	$ 1,260	$ 2,070	$ 2,261