Real Estate (Key Information for Leases) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) property
Lease classification:
Weighted average remaining lease term (years)	10 years 8 months 12 days
Rent deferral lease amendments, rent originally due in 2020	$ 50,719
Rent deferral lease amendments, rent originally due in 2021	1,410
Deferred rent repaid	3,259
Deferred rent due in 2021	36,794
Deferred rent due in 2022	10,944
Deferred rent due in 2023	$ 1,132
Operating
Lease classification:
Operating | property	3,141
Direct financing
Lease classification:
Direct financing | property	6
Minimum
Lease classification:
Initial lease terms	10 years
Maximum
Lease classification:
Initial lease terms	20 years