Lease Assets and Lease Liabilities Lease Assets and Lease Liabilities (Lease Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Right-of-use assets and land rights, net	$ 828,130	$ 838,734
Right-of use assets - operating leases
Lessee, Lease, Description [Line Items]
Right-of-use assets and land rights, net	182,520	184,063
Land rights, net
Lessee, Lease, Description [Line Items]
Right-of-use assets and land rights, net	$ 645,610	$ 654,671