Real Estate (Schedule of Future Minimum Lease Payments) (Details) $ in Thousands	Sep. 30, 2020 USD ($)
Operating Leases, Future Minimum Payments Due, Rolling Maturity [Abstract]
Operating Leases, Future Minimum Payments, Remainder of Fiscal Year	$ 70,818
Operating Leases, Future Minimum Payments Due, Next Twelve Months	281,516
Operating Leases, Future Minimum Payments, Due in Two Years	285,924
Operating Leases, Future Minimum Payments, Due in Three Years	282,072
Operating Leases, Future Minimum Payments, Due in Four Years	274,544
Operating Leases, Future Minimum Payments, Due in Five Years	267,944
Operating Leases, Future Minimum Payments, Due Thereafter	1,398,860
Operating Leases, Future Minimum Payments Due	$ 2,861,678