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Intangible Assets (Summary of Amortizing and Indefinite-Lived Intangibles) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Intangible Assets [Line Items]
Intangible assets, gross	$ 1,205,879	$ 1,205,879
Intangible assets, cumulative amortization	(159,943)	(155,951)
Intangible assets, cumulative impairment	(159,874)	(159,874)
Intangible assets, net	886,062	890,054
Amortizing intangibles:
Gross carrying value	203,043	203,043
Cumulative amortization	(125,983)	(121,991)
Cumulative impairment losses	0	0
Intangible assets, net	77,060	81,052
Indefinite lived intangible assets:
Gross carrying value	1,002,836	1,002,836
Cumulative amortization	(33,960)	(33,960)
Cumulative impairment losses	(159,874)	(159,874)
Intangible assets, net	$ 809,002	$ 809,002
Customer Relationships [Member]
Amortizing intangibles:
Weighted average life	1 year 7 months 6 days	1 year 11 months
Gross carrying value	$ 136,300	$ 136,300
Cumulative amortization	(113,711)	(109,994)
Cumulative impairment losses	0	0
Intangible assets, net	$ 22,589	$ 26,306
Off-Market Favorable Lease [Member]
Amortizing intangibles:
Weighted average life	32 years 2 months 12 days	32 years 4 months 24 days
Gross carrying value	$ 45,370	$ 45,370
Cumulative amortization	(12,272)	(11,997)
Cumulative impairment losses	0	0
Intangible assets, net	$ 33,098	$ 33,373
Non-Competition Agreement
Amortizing intangibles:
Weighted average life		0 years
Development Agreement
Amortizing intangibles:
Weighted average life	0 years	0 years
Gross carrying value	$ 21,373	$ 21,373
Cumulative amortization	0	0
Cumulative impairment losses	0	0
Intangible assets, net	21,373	21,373
Trademarks
Indefinite lived intangible assets:
Gross carrying value	129,501	129,501
Cumulative amortization	0	0
Cumulative impairment losses	(3,500)	(3,500)
Intangible assets, net	126,001	126,001
Gaming License Rights
Indefinite lived intangible assets:
Gross carrying value	873,335	873,335
Cumulative amortization	(33,960)	(33,960)
Cumulative impairment losses	(156,374)	(156,374)
Intangible assets, net	$ 683,001	$ 683,001

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