Description of the Business and Summary of Significant Accounting Policies - Revenue Recognition - Revenues Disaggregated by Major Source (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Total revenues	$ 360,565	$ 292,249	$ 333,934	$ 288,370	$ 345,175	$ 264,724	$ 298,778	$ 276,042	$ 1,275,118	$ 1,184,719	$ 1,149,207
Rooms [Member]
Disaggregation of Revenue [Line Items]
Total revenues									454,370	431,768	420,011
Hotel Group Rooms [Member]
Disaggregation of Revenue [Line Items]
Total revenues									312,364	294,411	291,950
Hotel Transient Rooms [Member]
Disaggregation of Revenue [Line Items]
Total revenues									142,006	137,357	128,061
Food and Beverage [Member]
Disaggregation of Revenue [Line Items]
Total revenues									519,843	483,945	477,493
Hotel Food And Beverage Banquets [Member]
Disaggregation of Revenue [Line Items]
Total revenues									360,181	329,655	324,246
Hotel Food And Beverage Outlets [Member]
Disaggregation of Revenue [Line Items]
Total revenues									159,662	154,290	153,247
Hotel, Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues									153,690	143,947	142,139
Entertainment [Member]
Disaggregation of Revenue [Line Items]
Total revenues									147,215	125,059	109,564
Entertainment Admissions And Ticketing [Member]
Disaggregation of Revenue [Line Items]
Total revenues									69,291	63,586	54,028
Entertainment Food And Beverage [Member]
Disaggregation of Revenue [Line Items]
Total revenues									45,961	31,901	28,059
Entertainment Retail And Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues									$ 31,963	$ 29,572	$ 27,477