Significant Accounting Policies and Recently Issued Accounting Standards - Narrative (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Accounting Policies [Line Items]
Impairment of long-lived assets	$ 0	$ 0
Resident receivables due period	30 days
Allowance for doubtful accounts	$ 5,100,000		$ 4,700,000
Preferred stock, shares issued (in shares)	0		0
Derivative, cash received on hedge	$ 0		$ 0
Convertible Preferred Stock
Accounting Policies [Line Items]
Preferred stock, shares issued (in shares)			41,250
Housing and support services
Accounting Policies [Line Items]
Contract liabilities for deferred fees paid	2,700,000		$ 2,300,000
Community fees
Accounting Policies [Line Items]
Contract liabilities for deferred fees paid	$ 900,000		$ 800,000