Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jan. 01, 2020
Significant Accounting Policies [Line Items]
Threshold ownership percentage for inter company balances and transactions elimination	100.00%
Loans and/or equity investments in variable interest entities	$ 230.0
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 01, 2020	Jan. 01, 2019
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201613Member	us-gaap:AccountingStandardsUpdate201602Member
Expected lease-up periods for estimating lost rentals, in months	6 months
Percentage of ordinary taxable income to be distributed for real estate investment trust qualification	90.00%	90.00%	90.00%
Number of years of federal income tax at corporate rates on failure to qualify as REIT	4 years
Time-Based Awards [Member]
Significant Accounting Policies [Line Items]
Stock award service period in years	3 years
Market Conditions Based Awards [Member] | Minimum [Member]
Significant Accounting Policies [Line Items]
Stock award service period in years	3 years
Market Conditions Based Awards [Member] | Maximum [Member]
Significant Accounting Policies [Line Items]
Stock award service period in years	5 years
ASU 2016-13 [Member]
Significant Accounting Policies [Line Items]
Credit loss reserve expected				$ 8.4