Financial Reporting By Business Segments - Identifiable Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Preopening costs	$ 1,665	$ 3,122	$ 4,869
Identifiable assets	3,556,495	4,088,468
Hospitality [Member]
Segment Reporting Information [Line Items]
Preopening costs	300	1,300	2,900
Identifiable assets	3,279,238	3,494,084
Entertainment [Member]
Segment Reporting Information [Line Items]
Preopening costs	1,400	1,900	$ 1,900
Identifiable assets	185,178	181,036
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Identifiable assets	$ 92,079	$ 413,348