Segment Information - Summary of Third-party Asset Management and Real Estate Services (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information
Third-party real estate services revenue, excluding reimbursements	$ 12,923	$ 24,150
Reimbursement revenue	11,047	13,957
Third-party real estate services revenue, including reimbursements	23,970	38,107
Third-party real estate services expenses	27,049	28,936
Third-party real estate services revenue less expenses	(3,079)	9,171
Property management fees
Segment Reporting Information
Third-party real estate services revenue, excluding reimbursements	4,808	4,942
Asset management fees
Segment Reporting Information
Third-party real estate services revenue, excluding reimbursements	1,771	2,228
Development fees
Segment Reporting Information
Third-party real estate services revenue, excluding reimbursements	3,539	14,250
Revenue, Remaining Performance Obligation, Amount	45,200
Development fees | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Segment Reporting Information
Revenue, Remaining Performance Obligation, Amount	$ 10,400
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	9 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	$ 12,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	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	$ 6,300
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	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	$ 16,500
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	3 years
Leasing fees
Segment Reporting Information
Third-party real estate services revenue, excluding reimbursements	$ 1,839	860
Construction management fees
Segment Reporting Information
Third-party real estate services revenue, excluding reimbursements	150	172
Other service revenue
Segment Reporting Information
Third-party real estate services revenue, excluding reimbursements	$ 816	$ 1,698