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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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