Segment Information Balance Sheet Data (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Segment Reporting, Asset Reconciling Item [Line Items]
Cash and cash equivalents	$ 70,108	$ 90,387	$ 121,390	$ 80,472
Property and equipment, net	4,643,936	4,613,014
North American Operations [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Cash and cash equivalents	11,367	33,996
Property and equipment, net	3,702,660	3,679,279
Australia Operations [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Cash and cash equivalents	39,782	26,902
Property and equipment, net	606,947	609,450
U.K./European Operations [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Cash and cash equivalents	18,959	29,489
Property and equipment, net	$ 334,329	$ 324,285