Net Investment In Sales-type Leases and Ground Lease Receivables (Interest Income) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Lessor, Lease, Description [Line Items]
Interest income from sales-type leases	[1]	$ 118,824	$ 81,844	$ 18,531
Cash
Lessor, Lease, Description [Line Items]
Interest income from sales-type leases		75,016	51,713	11,984
Non-cash
Lessor, Lease, Description [Line Items]
Interest income from sales-type leases		43,808	30,131	6,547
Net Investment in Sales-type Leases
Lessor, Lease, Description [Line Items]
Interest income from sales-type leases		82,990	57,284	15,627
Net Investment in Sales-type Leases | Cash
Lessor, Lease, Description [Line Items]
Interest income from sales-type leases		52,091	36,098	10,086
Net Investment in Sales-type Leases | Non-cash
Lessor, Lease, Description [Line Items]
Interest income from sales-type leases		30,899	21,186	5,541
Ground Lease Receivables
Lessor, Lease, Description [Line Items]
Interest income from sales-type leases		35,834	24,560	2,904
Ground Lease Receivables | Cash
Lessor, Lease, Description [Line Items]
Interest income from sales-type leases		22,925	15,615	1,898
Ground Lease Receivables | Non-cash
Lessor, Lease, Description [Line Items]
Interest income from sales-type leases		$ 12,909	$ 8,945	$ 1,006

[1] For the years ended December 31, 2021, 2020 and 2019, the Company recorded $8.4 million, $8.2 million and $5.0 million, respectively, of “Interest income from sales-type leases” in its consolidated statements of operations from its Ground Leases with iStar Inc. (“iStar”).