Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Leases
Right of Use Assets, net	$ 198,061	$ 201,128	$ 202,935
Short-term lease liabilities	18,644	10,709
Long-term lease liabilities	181,716	188,149
Operating Lease, Liability, Total	200,360	198,858
Property and equipment, at cost	2,386,409	2,345,283	2,322,291
Accumulated depreciation	(1,120,776)	(1,061,287)	(1,032,914)
Total property and equipment, net	1,265,633	$ 1,283,996	$ 1,289,377
Short-term lease liabilities	159
Long-term lease liabilities	1,349
Total finance lease obligations	1,508
Finance Leases
Leases
Property and equipment, at cost	1,904
Accumulated depreciation	(107)
Total property and equipment, net	$ 1,797