Unaudited Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net revenues:
Total revenues	$ 483,175	$ 437,712	$ 1,092,262	$ 997,819
Costs and expenses:
Cost of food, merchandise and other revenues	36,062	31,988	85,012	75,532
Operating expenses (exclusive of depreciation and amortization shown separately below and includes equity compensation of $2,119 and $976 for the three months ended September 30, 2018 and 2017, respectively, and $6,350 and $5,830 for the nine months ended September 30, 2018 and 2017, respectively)	198,781	194,802	544,354	541,395
Selling, general and administrative (includes equity compensation of $3,064 and $2,269 for the three months ended September 30, 2018 and 2017, respectively, and $12,270 and $13,435 for the nine months ended September 30, 2018 and 2017, respectively)	51,549	54,770	186,076	176,340
Goodwill impairment charges				269,332
Restructuring and other separation costs	3,866	5,100	16,392	5,100
Depreciation and amortization	41,187	42,230	119,635	120,597
Total costs and expenses	331,445	328,890	951,469	1,188,296
Operating income (loss)	151,730	108,822	140,793	(190,477)
Other income, net	(59)	(108)	(38)	(111)
Interest expense	19,500	20,160	59,974	57,873
Loss on early extinguishment of debt and write-off of discounts and debt issuance costs				8,143
Income (loss) before income taxes	132,289	88,770	80,857	(256,382)
Provision for (benefit from) income taxes	36,301	33,736	25,016	(74,437)
Net income (loss)	95,988	55,034	55,841	(181,945)
Other comprehensive income (loss):
Unrealized gain on derivatives, net of tax	1,149	2,006	11,116	3,704
Comprehensive income (loss)	$ 97,137	$ 57,040	$ 66,957	$ (178,241)
Income (loss) per share:
Net income (loss) per share, basic	$ 1.11	$ 0.64	$ 0.65	$ (2.12)
Net income (loss) per share, diluted	$ 1.10	$ 0.64	$ 0.64	$ (2.12)
Weighted average common shares outstanding:
Basic	86,616	86,012	86,410	85,712
Diluted	87,542	86,284	87,029	85,712
Admissions [Member]
Net revenues:
Total revenues	$ 279,873	$ 264,967	$ 635,682	$ 605,007
Food, Merchandise and Other [Member]
Net revenues:
Total revenues	$ 203,302	$ 172,745	$ 456,580	$ 392,812