CONSOLIDATED STATEMENTS OF (LOSS) INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues:
Rental and related revenues	$ 396,716	$ 430,584	$ 452,138
Interest and other income	17,317	11,940	81,540
Resident fees and services	155,512	156,045	128,058
Total revenues	569,545	598,569	661,736
Expenses:
Depreciation and amortization	178,991	176,737	181,549
Interest	98,632	100,424	126,610
General and administrative	34,669	32,755	30,886
Provision for loan losses and other reserves	3,935	1,855	1,238
Impairment of real estate	9,499	4,003	121,819
Total expenses	466,927	447,327	570,574
Other (expense) income:
Loss on extinguishment of debt	(34,622)	(531)	(16,340)
Other income	373	2,154	2,094
Net gain on sales of real estate	12,301	2,861	2,300
Total other (expense) income	(21,948)	4,484	(11,946)
Income before loss from unconsolidated joint venture and income tax expense	80,670	155,726	79,216
Loss from unconsolidated joint venture	(192,081)	(16,599)	(6,796)
Income tax expense	(1,845)	(710)	(3,402)
Net (loss) income	(113,256)	138,417	69,018
Net income attributable to noncontrolling interest	0	0	(22)
Net (loss) income attributable to common stockholders	$ (113,256)	$ 138,417	$ 68,996
Net (loss) income attributable to common stockholders, per:
Basic common share (in dollars per share)	$ (0.52)	$ 0.67	$ 0.37
Diluted common share (in dollars per share)	$ (0.52)	$ 0.67	$ 0.37
Weighted-average number of common shares outstanding, basic (in shares)	219,073,027	206,223,503	187,172,210
Weighted-average number of common shares outstanding, diluted (in shares)	219,073,027	207,252,830	188,127,092
Revenue, type [Extensible Enumeration]	Health Care, Resident Service [Member]	Health Care, Resident Service [Member]	Health Care, Resident Service [Member]
Triple-net portfolio
Expenses:
Operating expenses	$ 20,221	$ 20,590	$ 22,215
Senior housing - managed portfolio
Expenses:
Operating expenses	$ 120,980	$ 110,963	$ 86,257