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Intangible Assets (Summary of Amortizing and Indefinite-Lived Intangibles) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Intangible Assets [Line Items]
Intangible assets, gross	$ 1,209,179	$ 1,209,179
Intangible assets, cumulative amortization	(145,905)	(132,558)
Intangible assets, cumulative impairment	(142,372)	(142,372)
Intangible assets, net	920,902	934,249
Amortizing intangibles:
Gross carrying value	206,343	206,343
Cumulative amortization	(111,945)	(98,598)
Cumulative impairment losses	0	0
Intangible assets, net	94,398	107,745
Indefinite lived intangible assets:
Gross carrying value	1,002,836	1,002,836
Cumulative amortization	(33,960)	(33,960)
Cumulative impairment losses	(142,372)	(142,372)
Intangible assets, net	$ 826,504	826,504
Customer Relationships [Member]
Amortizing intangibles:
Weighted average life	2 years 5 months		2 years 11 months
Gross carrying value	$ 139,600	139,600
Cumulative amortization	(100,469)	(87,642)
Cumulative impairment losses	0	0
Intangible assets, net	$ 39,131	51,958
Off-Market Favorable Lease [Member]
Amortizing intangibles:
Weighted average life	32 years 11 months		33 years 4 months 24 days
Gross carrying value	$ 45,370	45,370
Cumulative amortization	(11,476)	(10,956)
Cumulative impairment losses	0	0
Intangible assets, net	$ 33,894	$ 34,414
Non-Competition Agreement
Amortizing intangibles:
Weighted average life
Development Agreement
Amortizing intangibles:
Weighted average life
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	(138,872)	(138,872)
Intangible assets, net	$ 700,503	$ 700,503

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