Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 43,369	$ 43,906
Accounts receivable, net	38,510	37,002
Inventories	37,877	33,134
Prepaid expenses and other current assets	23,387	20,894
Deferred tax assets, net	7,268	7,268
Total current assets	150,411	142,204
Property and equipment, at cost	2,647,172	2,612,052
Accumulated depreciation	(907,175)	(867,421)
Property and equipment, net	1,739,997	1,744,631
Goodwill	335,610	335,610
Trade names/trademarks, net	163,822	164,188
Other intangible assets, net	23,696	24,525
Other assets	30,327	31,316
Total assets	2,443,863	2,442,474
Current liabilities:
Accounts payable	96,005	88,279
Current maturities on long-term debt	44,050	14,050
Accrued salaries, wages and benefits	15,720	19,068
Deferred revenue	130,584	79,367
Dividends payable	18,373	172
Other accrued expenses	23,927	20,149
Total current liabilities	328,659	221,085
Long-term debt	1,586,435	1,589,403
Deferred tax liabilities, net	4,173	31,760
Other liabilities	23,983	20,691
Total liabilities	1,943,250	1,862,939
Commitments and contingencies (Note 10)
Stockholders' Equity:
Preferred stock, $0.01 par value-authorized, 100,000,000 shares, no shares issued or outstanding at March 31, 2015 and December 31, 2014
Common stock, $0.01 par value-authorized, 1,000,000,000 shares; 90,204,351 shares issued at March 31, 2015 and 90,191,100 shares issued at December 31, 2014	902	902
Additional paid-in capital	639,114	655,471
Accumulated other comprehensive loss	(1,356)	(483)
(Accumulated deficit) retained earnings	(28,176)	33,516
Treasury stock, at cost (4,105,970 shares at March 31, 2015 and December 31, 2014)	(109,871)	(109,871)
Total stockholders' equity	500,613	579,535
Total liabilities and stockholders' equity	$ 2,443,863	$ 2,442,474