Real Estate Investments - Financing Receivable (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023 USD ($) item	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) lease item	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) lease Center
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Interest income from financing receivables	$ 3,832	$ 357	$ 11,413	$ 357
Provision for credit losses	189	$ 795	2,107	$ 1,454
ALF & MC
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Amount of joint venture investment	$ 121,321		121,321
Contribution to JV			$ 117,490
Number of assisted living and memory care communities | item	11		11
Lease term	10 years		10 years
Number of operating lease renewals | lease			2
Lease renewal term	5 years		5 years
Interest income from financing receivables	$ 2,427		$ 7,198
Provision for credit losses			$ 1,213
Percentage of contractual initial cash yield			7.25%
Percentage of contractual initial cash yield in year three			7.50%
Percentage of floor on initial cash yield			2.00%
Percentage of ceiling on initial cash yield			4.00%
Maximum percentage of purchase option to buy properties			50.00%
Percentage of cash return			9.00%
SNF
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Contribution to JV					$ 61,661
Skilled nursing center purchased | Center					3
Real estate property acquired					$ 75,825
Lease term					10 years
Number of operating lease renewals | lease					2
Lease renewal term					5 years
Interest income from financing receivables	$ 1,405		$ 4,215