Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2021 USD ($) State Segment Entity Leases Tenant Property JointVenture shares	Dec. 31, 2020 USD ($) Leases Property shares	Dec. 31, 2019 USD ($)	Mar. 15, 2022	Jan. 01, 2019 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of VIEs consolidated | Entity	2
Number of reportable segments | Segment	1
Impairment of real estate assets	$ 95,826,000	$ 64,108,000	$ 0
Number of properties classified | Property	0	1
Real estate held for sale, assets		$ 1,864,000
Real estate held for sale, liabilities		0
Impairment loss	$ 0	0	$ 0
Reduction to rental revenue	200,000	5,600,000
Reversal of straight line rent	$ 1,200,000	5,000,000.0
Revenue performance obligation satisfied over time method used description	Management determined that property and asset management and construction and development management services each represent a series of stand-ready performance obligations satisfied over time with each day of service being a distinct performance obligation.
Number of tenant | Tenant	1
Annualized based rent	10.20%
Number of consolidated properties acquired | Property	137
Number of entities acquired | JointVenture	25
Number of states in properties located | State	38
Operating Lease, Right-of-Use Asset	$ 17,000,000.0	$ 18,800,000
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Prepaid Expense and Other Assets	Prepaid Expense and Other Assets
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Accounts Payable and Accrued Liabilities	Accounts Payable and Accrued Liabilities
Below Market Lease assets	$ 3,656,000	$ 4,186,000
ASU 2016-02 [Member] | Prepaid Expenses, Deferred Expenses and Other Assets, Net [Member]
Summary Of Significant Accounting Policies [Line Items]
Operating Lease, Right-of-Use Asset					$ 8,400,000
ASU 2016-02 [Member] | Accounts Payable, Accrued Expenses and Other Liabilities [Member]
Summary Of Significant Accounting Policies [Line Items]
Operating lease, liability					$ 8,400,000
ASU 2016-02 [Member]
Summary Of Significant Accounting Policies [Line Items]
Lease, Cost	1,300,000
Below Market Lease assets	$ 11,005
Class C Common Shares [Member]
Summary Of Significant Accounting Policies [Line Items]
Common shares, outstanding | shares	0
Class B Common Shares [Member]
Summary Of Significant Accounting Policies [Line Items]
Common shares, outstanding | shares		0
Management and Other Fee Income [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage of revenue earned from unconsolidated joint ventures	100.00%
Rent Deferral Agreements [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance to tenant	$ 800,000	$ 1,800,000
Rent Deferral Agreements [Member] | ASU 2016-02 [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of leases | Leases		66
Number of additional leases | Leases	1
Operating Partnership [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage of operating partnership interest held by parent	77.90%
Operating Partnership [Member] | Subsequent Event [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage of operating partnership interest held by parent				77.90%