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Summary of Significant Accounting Policies - Fair Value (Details) - USD ($) $ in Thousands		Sep. 30, 2025		Dec. 31, 2024		Sep. 30, 2024	Dec. 31, 2023
Assets
Net investment in sales-type leases		$ 3,527,275	[1]	$ 3,454,953	[1]	$ 3,440,042	$ 3,255,195
Ground Lease receivables		1,961,019	[1]	1,833,398	[1]	1,779,147	$ 1,622,298
Cash and cash equivalents		12,123	[1]	8,346	[1]	15,579
Restricted cash		9,136	[1]	8,772	[1]	$ 8,683
Liabilities
Debt obligations, net	[1]	4,513,960		4,317,439
Nonrelated party
Assets
Loans receivable, net	[1]	44,966
Related party
Assets
Loans receivable, net	[1]	112,544		112,359
Carrying Value
Assets
Net investment in sales-type leases		3,527,000		3,455,000
Ground Lease receivables		1,961,000		1,833,000
Cash and cash equivalents		12,000		8,000
Restricted cash		9,000		9,000
Liabilities
Debt obligations, net		4,514,000		4,317,000
Carrying Value | Nonrelated party
Assets
Loans receivable, net		45,000
Carrying Value | Related party
Assets
Loans receivable, net		113,000		112,000
Carrying Value | Fair Value, Inputs, Level 1
Liabilities
Debt obligations, net		1,428,000		1,426,000
Carrying Value | Fair Value, Inputs, Level 3
Liabilities
Debt obligations, net		3,086,000		2,891,000
Fair Value
Liabilities
Debt obligations, net		3,980,000		3,686,000
Fair Value | Nonrelated party
Assets
Loans receivable, net		45,000
Fair Value | Fair Value, Inputs, Level 1
Assets
Cash and cash equivalents		12,000		8,000
Restricted cash		9,000		9,000
Liabilities
Debt obligations, net		1,403,000		1,335,000
Fair Value | Fair Value, Inputs, Level 3
Assets
Net investment in sales-type leases		3,548,000		3,680,000
Ground Lease receivables		2,091,000		2,043,000
Liabilities
Debt obligations, net		2,577,000		2,351,000
Fair Value | Fair Value, Inputs, Level 3 | Related party
Assets
Loans receivable, net		$ 116,000		$ 115,000
[1] Refer to Note 2 for details on the Company’s consolidated variable interest entities (“VIEs”).

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