Segment Reporting (Schedule of Segment Reporting Information, by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Segment Reporting Information [Line Items]
Rental income	$ 62,255	$ 59,394	$ 188,505	$ 163,935
Resident fees and services	12,367	12,013	35,860	24,005
Interest income and other	5,484	4,891	16,005	19,584
Total revenues	80,106	76,298	240,370	207,524
Senior housing operating expenses	10,045	9,239	29,525	18,352
Taxes and insurance on leased properties	2,908	2,358	8,738	7,553
NOI	67,153	64,701	202,107	181,619
Depreciation	17,515	17,533	52,862	53,577
Interest	15,086	11,412	43,308	32,472
Legal	67	88	364	2,254
Franchise, excise and other taxes	2	225	443	694
General and administrative	4,430	4,744	14,390	17,893
Loan and realty losses	1,959	11,329	1,727	39,951
Gains on sales of real estate, net	(737)	(14,840)	(13,500)	(28,342)
Gain on operations transfer, net	0	(19)	(20)	710
Gain on note receivable payoff	0	0	0	(1,113)
Other non-operating income	(202)	0	(202)	0
Loss on early retirement of debt	0	0	73	151
Gains from equity method investment	0	0	0	(569)
Net income	29,033	34,229	102,662	63,941
Total assets	2,499,090	2,508,785	2,499,090	2,508,785	$ 2,507,424
Operating Segments | Real Estate
Segment Reporting Information [Line Items]
Rental income	62,255	59,394	188,505	163,935
Resident fees and services	0	0	0	0
Interest income and other	5,337	4,820	15,727	19,362
Total revenues	67,592	64,214	204,232	183,297
Senior housing operating expenses	0	0	0	0
Taxes and insurance on leased properties	2,908	2,358	8,738	7,553
NOI	64,684	61,856	195,494	175,744
Depreciation	15,211	15,390	46,064	49,282
Interest	773	837	2,298	2,371
Legal	0	0	0	0
Franchise, excise and other taxes	0	0	0	0
General and administrative	0	0	0	0
Loan and realty losses	1,959	11,329	1,727	39,951
Gains on sales of real estate, net	(737)	(14,840)	(13,500)	(28,342)
Gain on operations transfer, net		(19)	(20)	710
Gain on note receivable payoff				(1,113)
Other non-operating income	(202)		(202)
Loss on early retirement of debt			0	0
Gains from equity method investment				(569)
Net income	47,680	49,159	159,127	113,454
Total assets	2,218,699	2,214,475	2,218,699	2,214,475
Operating Segments | SHOP
Segment Reporting Information [Line Items]
Rental income	0	0	0	0
Resident fees and services	12,367	12,013	35,860	24,005
Interest income and other	0	0	0	0
Total revenues	12,367	12,013	35,860	24,005
Senior housing operating expenses	10,045	9,239	29,525	18,352
Taxes and insurance on leased properties	0	0	0	0
NOI	2,322	2,774	6,335	5,653
Depreciation	2,292	2,129	6,757	4,245
Interest	0	0	0	0
Legal	0	0	0	0
Franchise, excise and other taxes	0	0	0	0
General and administrative	0	0	0	0
Loan and realty losses	0	0	0	0
Gains on sales of real estate, net	0	0	0	0
Gain on operations transfer, net		0	0	0
Gain on note receivable payoff				0
Other non-operating income	0		0
Loss on early retirement of debt			0	0
Gains from equity method investment				0
Net income	30	645	(422)	1,408
Total assets	277,014	290,708	277,014	290,708
Non-segment/Corporate
Segment Reporting Information [Line Items]
Rental income	0	0	0	0
Resident fees and services	0	0	0	0
Interest income and other	147	71	278	222
Total revenues	147	71	278	222
Senior housing operating expenses	0	0	0	0
Taxes and insurance on leased properties	0	0	0	0
NOI	147	71	278	222
Depreciation	12	14	41	50
Interest	14,313	10,575	41,010	30,101
Legal	67	88	364	2,254
Franchise, excise and other taxes	2	225	443	694
General and administrative	4,430	4,744	14,390	17,893
Loan and realty losses	0	0	0	0
Gains on sales of real estate, net	0	0	0	0
Gain on operations transfer, net		0	0	0
Gain on note receivable payoff				0
Other non-operating income	0		0
Loss on early retirement of debt			73	151
Gains from equity method investment				0
Net income	(18,677)	(15,575)	(56,043)	(50,921)
Total assets	$ 3,377	$ 3,602	$ 3,377	$ 3,602