Dispositions of Real Estate and Discontinued Operations - Schedule of Results of Discontinued Operations (Details) - Held-for-sale - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Rental and related revenues	$ 0	$ 694	$ 0	$ 7,535
Resident fees and services	1,284	8,507	6,765	111,777
Total revenues	1,284	9,201	6,765	119,312
Interest expense	0	47	0	3,900
Operating	1,334	13,010	6,451	118,175
Transaction costs	0	0	0	76
Impairments and loan loss reserves (recoveries), net	0	21,740	0	32,736
Total costs and expenses	1,334	34,797	6,451	154,887
Gain (loss) on sales of real estate, net	(1,131)	26,758	1,361	408,658
Other income (expense), net	(7)	(863)	12	5,150
Total other income (expense), net	(1,138)	25,895	1,373	413,808
Income (loss) before income taxes and equity income (loss) from unconsolidated joint ventures	(1,188)	299	1,687	378,233
Income tax benefit (expense)	(110)	221	260	1,345
Equity income (loss) from unconsolidated joint ventures	0	81	64	4,991
Income (loss) from discontinued operations	$ (1,298)	$ 601	$ 2,011	$ 384,569