Real Property Acquisitions and Development - Summary of Real Property Investment Activity by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Business Acquisition [Line Items]
Land and land improvements	$ 70,414	$ 44,137
Buildings and improvements	346,429	533,925
Acquired lease intangibles	39,955	48,344
Right of use assets, net	927	3,852
Total net real estate assets	457,725	630,258
Receivables and other assets	592	1,630
Total assets acquired	458,317	631,888
Secured debt	(46,454)	0
Lease liabilities	(953)	(3,852)
Accrued expenses and other liabilities	(8,191)	(4,154)
Total liabilities acquired	(55,598)	(8,006)
Noncontrolling interests	0	(20,352)
Non-cash acquisition related activity	0	(2,120)
Cash disbursed for acquisitions	402,719	601,410
Construction in progress additions	238,548	143,805
Less: Capitalized interest	(10,335)	(5,479)
Accruals	(1,987)	(185)
Cash disbursed for construction in progress	226,226	138,141
Capital improvements to existing properties	91,339	90,229
Total cash invested in real property, net of cash acquired	720,284	829,780
Seniors Housing Operating
Business Acquisition [Line Items]
Land and land improvements	2,517	43,897
Buildings and improvements	16,434	402,342
Acquired lease intangibles	865	31,366
Right of use assets, net	0	0
Total net real estate assets	19,816	477,605
Receivables and other assets	234	1,630
Total assets acquired	20,050	479,235
Secured debt	(5,501)	0
Lease liabilities	0	0
Accrued expenses and other liabilities	(120)	(4,154)
Total liabilities acquired	(5,621)	(4,154)
Noncontrolling interests	0	(20,348)
Non-cash acquisition related activity	0	(2,120)
Cash disbursed for acquisitions	14,429	452,613
Construction in progress additions	131,944	113,407
Less: Capitalized interest	(7,950)	(4,179)
Accruals	2,303	(1,963)
Cash disbursed for construction in progress	126,297	107,265
Capital improvements to existing properties	69,783	68,612
Total cash invested in real property, net of cash acquired	210,509	628,490
Triple-net
Business Acquisition [Line Items]
Land and land improvements	7,370	0
Buildings and improvements	74,289	171
Acquired lease intangibles	0	0
Right of use assets, net	0	0
Total net real estate assets	81,659	171
Receivables and other assets	0	0
Total assets acquired	81,659	171
Secured debt	0	0
Lease liabilities	0	0
Accrued expenses and other liabilities	0	0
Total liabilities acquired	0	0
Noncontrolling interests	0	(4)
Non-cash acquisition related activity	0	0
Cash disbursed for acquisitions	81,659	167
Construction in progress additions	4,995	20,756
Less: Capitalized interest	(1,248)	(1,089)
Accruals	0	0
Cash disbursed for construction in progress	3,747	19,667
Capital improvements to existing properties	4,427	8,294
Total cash invested in real property, net of cash acquired	89,833	28,128
Outpatient Medical
Business Acquisition [Line Items]
Land and land improvements	60,527	240
Buildings and improvements	255,706	131,412
Acquired lease intangibles	39,090	16,978
Right of use assets, net	927	3,852
Total net real estate assets	356,250	152,482
Receivables and other assets	358	0
Total assets acquired	356,608	152,482
Secured debt	(40,953)	0
Lease liabilities	(953)	(3,852)
Accrued expenses and other liabilities	(8,071)	0
Total liabilities acquired	(49,977)	(3,852)
Noncontrolling interests	0	0
Non-cash acquisition related activity	0	0
Cash disbursed for acquisitions	306,631	148,630
Construction in progress additions	101,609	9,642
Less: Capitalized interest	(1,137)	(211)
Accruals	(4,290)	1,778
Cash disbursed for construction in progress	96,182	11,209
Capital improvements to existing properties	17,129	13,323
Total cash invested in real property, net of cash acquired	$ 419,942	$ 173,162