Leases - Tenant Leases (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Leases
Percentage of portfolio leased			99.80%
Weighted average remaining lease term	9 years 9 months 18 days		9 years 9 months 18 days
Annualized base rent derived from tenants (as a percent)			62.20%
Option to extend lease			true
Lease, practical expedients			true
Lease Income
Total lease payments	$ 65,762	$ 49,463	$ 184,144	$ 140,071
Less: Variable lease payments	6,897	4,868	19,981	15,168
Total Non-Variable Lease Payments	58,865	$ 44,595	164,163	$ 124,903
Lessor, Operating Lease, Payments, Fiscal Year Maturity [Abstract]
2020 (remaining)	63,293		63,293
2021	253,841		253,841
2022	253,056		253,056
2023	248,988		248,988
2024	239,171		239,171
Thereafter	1,540,746		1,540,746
Lease payments receivable	$ 2,599,095		$ 2,599,095