Property, Plant and Equipment - New Construction (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Revenues									$ 1,218,219	$ 1,275,059	$ 1,282,725
Operating expenses									896,425	940,269	934,582
Income from operations	$ 57,055	$ 100,367	$ 100,451	$ 63,953	$ 75,242	$ 121,462	$ 112,504	$ 68,729	321,826	377,937	$ 361,075
New Construction
Disaggregation of Revenue [Line Items]
Operating expenses									1,856	201
Income from operations									343	(49)
Occupancy Hotel and Other | New Construction
Disaggregation of Revenue [Line Items]
Revenues									$ 2,199	$ 152