Segment Information Balance Sheet Data (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Segment Reporting, Asset Reconciling Item [Line Items]
Cash and cash equivalents	$ 80,277	$ 32,319	$ 26,366	$ 35,941
Property and equipment, net	4,628,894	4,503,319
North American Operations [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Cash and cash equivalents	7,158	10,137
Property and equipment, net	3,626,293	3,590,625
Australian Operations [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Cash and cash equivalents	47,989	9,213
Property and equipment, net	670,160	634,148
U.K./European Operations [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Cash and cash equivalents	25,130	12,969
Property and equipment, net	$ 332,441	$ 278,546