Investments - Summary of Gross Investment Activity (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) investmentLocation	Dec. 31, 2021 USD ($) investmentLocation	Dec. 31, 2020 USD ($) investmentLocation
Number of Investment Locations
Beginning balance | investmentLocation	1,451	1,181	1,000
Acquisitions of and additions to real estate investments | investmentLocation	224	297	208
Sales of investments in real estate | investmentLocation	(54)	(38)	(49)
Relinquishment of properties at end of ground lease term | investmentLocation			(3)
Investments in loans receivable | investmentLocation	75	49	25
Principal collections on and settlements of loans and direct financing lease receivables | investmentLocation	(43)	(38)
Ending balance | investmentLocation	1,653	1,451	1,181
Dollar Amount of Investments
Beginning balance	$ 3,355,561	$ 2,528,673	$ 2,002,314
Acquisitions of and additions to real estate investments	810,661	853,798	568,204
Sales of investments in real estate	(138,515)	(57,154)	(81,312)
Relinquishment of properties at end of ground lease term			(1,931)
Provisions for impairment of real estate	(20,164)	(6,120)	(8,399)
Investments in loans receivable	143,954	137,351	61,339
Principal collections on and settlements of loans and direct financing lease receivables	(93,118)	(100,488)	(286)
Other	(2,994)	(499)	(11,256)
Ending balance	4,055,385	3,355,561	$ 2,528,673
Less: accumulated depreciation and amortization	(276,307)	(200,152)
Net investments	$ 3,779,078	$ 3,155,409