Commitments and Contingencies (Annual Minimum Lease Payments) (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Finance Leases
2020	$ 1,374
2021	1,201
2022	985
2023	545
2024	11
Total minimum lease payments	4,116
Less: amount representing interest	(224)
Present value of future payments	3,892
Less: current obligations	(1,350)
Long-term obligations	2,542
Operating Leases
2020	254,660
2021	256,197
2022	257,201
2023	257,277
2024	255,925
Thereafter	2,992,385
Total minimum lease payments	4,273,645
Less: amount representing interest	(1,751,122)
Present value of future payments	2,522,523
Less: current obligations	(245,665)
Long-term obligations	$ 2,276,858