Segment Information - Summary of Third-party Asset Management and Real Estate Services (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information
Third-party real estate services revenue, excluding reimbursements	$ 11,211	$ 14,845	$ 24,134	$ 38,995
Reimbursement revenue	10,946	11,900	21,993	25,857
Third-party real estate services revenue, including reimbursements	22,157	26,745	46,127	64,852
Third-party real estate services expenses	24,143	25,557	51,192	54,493
Third-party real estate services revenue less expenses	(1,986)	1,188	(5,065)	10,359
Property management fees
Segment Reporting Information
Third-party real estate services revenue, excluding reimbursements	4,976	4,776	9,784	9,718
Asset management fees
Segment Reporting Information
Third-party real estate services revenue, excluding reimbursements	1,513	2,229	3,284	4,457
Development fees
Segment Reporting Information
Third-party real estate services revenue, excluding reimbursements	2,148	4,392	5,687	18,642
Revenue, Remaining Performance Obligation, Amount	43,200		43,200
Development fees | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-01
Segment Reporting Information
Revenue, Remaining Performance Obligation, Amount	$ 7,100		$ 7,100
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	6 months		6 months
Development fees | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Segment Reporting Information
Revenue, Remaining Performance Obligation, Amount	$ 12,300		$ 12,300
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year		1 year
Development fees | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Segment Reporting Information
Revenue, Remaining Performance Obligation, Amount	$ 6,600		$ 6,600
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year		1 year
Development fees | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Segment Reporting Information
Revenue, Remaining Performance Obligation, Amount	$ 17,200		$ 17,200
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	3 years		3 years
Leasing fees
Segment Reporting Information
Third-party real estate services revenue, excluding reimbursements	$ 1,038	1,424	$ 2,877	2,284
Construction management fees
Segment Reporting Information
Third-party real estate services revenue, excluding reimbursements	37	234	187	406
Other service revenue
Segment Reporting Information
Third-party real estate services revenue, excluding reimbursements	$ 1,499	$ 1,790	$ 2,315	$ 3,488