Real Property Acquisitions and Development - Construction Activity (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting Information [Line Items]
Total development projects	$ 451,546	$ 182,421
Expansion projects	62,292	0
Total construction in progress conversions	513,838	182,421
Seniors Housing Operating
Segment Reporting Information [Line Items]
Total development projects	280,333	182,421
Triple-net
Segment Reporting Information [Line Items]
Total development projects	141,142	0
Outpatient Medical
Segment Reporting Information [Line Items]
Total development projects	$ 30,071	$ 0