Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended									12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues:
Rooms										$ 431,768	$ 420,011	$ 404,457
Food and beverage										483,945	477,493	461,157
Other hotel revenue										143,947	142,139	128,989
Entertainment										125,059	109,564	97,521
Total revenues	$ 345,175	$ 264,724	$ 298,778	$ 276,042	$ 319,775	$ 271,720	$ 296,215	$ 261,497		1,184,719	1,149,207	1,092,124
Operating expenses:
Rooms										112,636	109,618	110,067
Food and beverage										269,824	267,307	261,580
Other hotel expenses										326,560	322,774	312,989
Management fees, net										23,856	22,194	14,657
Total hotel operating expenses										732,876	721,893	699,293
Entertainment										84,393	74,550	67,363
Corporate										33,495	29,143	28,914
Preopening costs										1,926		909
Depreciation and amortization	28,097	28,546	27,679	27,637	27,928	26,706	26,409	28,773		111,959	109,816	114,383
Impairment and other charges									$ 16,300	35,418		19,200
Other-than-temporary impairment loss on held-to-maturity securities:
Total other-than-temporary impairment loss										41,961
Less portion recognized in other comprehensive income										(6,543)
Net impairment loss recognized in earnings on held-to-maturity securities	35,400									35,418
Total operating expenses										1,000,067	935,402	930,062
Operating income	36,490	36,409	64,693	47,060	61,499	46,567	66,945	38,794		184,652	213,805	162,062
Interest expense										(66,051)	(63,906)	(63,901)
Interest income										11,818	11,500	12,384
Loss from joint ventures										(4,402)	(2,794)
Other gains and (losses), net										928	4,161	(10,889)
Income before income taxes	21,141	24,400	48,191	33,213	49,144	35,415	52,746	25,461		126,945	162,766	99,656
(Provision) benefit for income taxes	51,177	(530)	(899)	(593)	(1,048)	(1,822)	(1,415)	885		49,155	(3,400)	11,855
Net income	$ 72,318	$ 23,870	$ 47,292	$ 32,620	$ 48,096	$ 33,593	$ 51,331	$ 26,346		$ 176,100	$ 159,366	$ 111,511
Basic income per share	$ 1.41	$ 0.47	$ 0.92	$ 0.64	$ 0.94	$ 0.66	$ 1.01	$ 0.52		$ 3.44	$ 3.12	$ 2.18
Fully diluted income per share	$ 1.41	$ 0.46	$ 0.92	$ 0.63	$ 0.94	$ 0.66	$ 1.00	$ 0.51		3.43	3.11	2.16
Dividends declared per common share										$ 3.20	$ 3.00	$ 2.70