Summary of Significant Accounting Policies - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($) State Property shares	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) JointVenture Property Segment Entity State Tenant shares	Sep. 30, 2021 USD ($)	Dec. 31, 2021 Property
Summary Of Significant Accounting Policies [Line Items]
Number of VIEs consolidated | Entity			2
Number of reportable segments | Segment			1
Number of properties classified | Property	19		19		0
Impairment of real estate assets	$ 10,275,000	$ 3,814,000	$ 120,609,000	$ 70,053,000
Real estate held for sale, liabilities	0		0
Impairment loss	3,100,000		35,600,000
Increase (reduction) to rental income	700,000	500,000	900,000	100,000
Reversal of straight line rent	600,000	400,000	1,700,000	300,000
Real estate held for sale	$ 202,777,000		$ 202,777,000
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			14.40%
Number of consolidated properties acquired | Property			104
Number of entities acquired | JointVenture			17
Number of states in properties located | State	33		33
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Distribution of taxable income to qualify as REIT, percent			90.00%
Class C Common Shares [Member]
Summary Of Significant Accounting Policies [Line Items]
Common shares, outstanding | shares	0		0
Class B Common Shares [Member]
Summary Of Significant Accounting Policies [Line Items]
Common shares, outstanding | shares	0		0
Management and Other Fee Income [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage of revenue earned from unconsolidated joint ventures			100.00%
Allowance for Deferral Agreements [Member]
Summary Of Significant Accounting Policies [Line Items]
Increase (reduction) to rental income	$ 700,000	$ (400,000)	$ 1,000,000.0	$ 200,000
Operating Partnership [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage of operating partnership interest held by parent	100.00%		100.00%