Condensed Consolidated Income Statements - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues:
Rental income	$ 42,507	$ 44,123	$ 84,971	$ 82,470
Independent living facilities	615	887	1,240	1,747
Interest and other income	1,046	1,191	2,297	1,642
Total revenues	44,168	46,201	88,508	85,859
Expenses:
Depreciation and amortization	13,239	13,437	26,399	25,339
Interest expense	5,849	7,285	12,563	14,145
Property taxes	837	456	1,322	1,282
Independent living facilities	546	719	1,092	1,426
General and administrative	4,762	4,606	8,816	7,916
Total expenses	25,233	26,503	50,192	50,108
Other loss:
Loss on sale of real estate	0	0	(56)	0
Net income	$ 18,935	$ 19,698	$ 38,260	$ 35,751
Earnings per common share:
Basic (in usd per share)	$ 0.20	$ 0.21	$ 0.40	$ 0.39
Diluted (in usd per share)	$ 0.20	$ 0.21	$ 0.40	$ 0.39
Weighted-average number of common shares:
Basic (in shares)	95,208	94,036	95,185	91,039
Diluted (in shares)	95,208	94,036	95,185	91,039
Independent living facilities, revenue services	us-gaap:HealthCareResidentServiceMember	us-gaap:HealthCareResidentServiceMember	us-gaap:HealthCareResidentServiceMember	us-gaap:HealthCareResidentServiceMember
Independent living facilities, cost of services	us-gaap:HealthCareResidentServiceMember	us-gaap:HealthCareResidentServiceMember	us-gaap:HealthCareResidentServiceMember	us-gaap:HealthCareResidentServiceMember