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Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands				1 Months Ended		3 Months Ended	12 Months Ended
	Sep. 01, 2015	Nov. 01, 2013	Oct. 01, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2015	Sep. 01, 2015	Dec. 31, 2014
Reconciliation of goodwill and accumulated goodwill impairment losses
Goodwill							$ 2,175,507	$ 2,137,749	$ 2,134,697	$ 2,175,507		$ 2,137,749
Accumulated goodwill impairment losses							(1,263,565)	(1,263,565)	(1,182,744)	(1,263,565)		(1,263,565)
Goodwill, net							911,942	874,184	951,953	911,942		874,184
Goodwill acquired								37,758	3,052
Goodwill impairment losses			$ (249,300)						(80,821)
Balance at the end of the period, Goodwill gross							2,175,507	2,137,749	2,134,697
Balance at the end of the period, Accumulated goodwill impairment losses							(1,263,565)	(1,263,565)	(1,182,744)
Goodwill, Ending Balance							911,942	874,184	951,953
Intangible assets
Finite-lived intangible assets, Accumulated Amortization										77,135		76,613
Finite-lived intangible assets, Net Book Value										16,037
Intangible assets, Gross Carrying Value										468,577		496,066
Intangible Assets, Net (Excluding Goodwill), Total										391,442		419,453
Other intangible assets										391,442		419,453
Indefinite-Lived Intangible Assets (Excluding Goodwill), Total										375,405		418,991
Intangible asset amortization expense							500	11,400	16,100
Goodwill impairment losses			249,300						80,821
Impairment of intangible asset			$ 311,000			$ 4,600	40,000	74,500
Expected future amortization expense
2016										1,755
2017										1,685
2018										1,673
2019										1,673
2020										1,673
Thereafter										7,578
Finite-lived intangible assets, Net Book Value										16,037
Goodwill							$ 911,942	874,184	951,953	911,942		874,184
Other intangible assets										391,442		419,453
Spinoff
Reconciliation of goodwill and accumulated goodwill impairment losses
Goodwill impairment losses		$ (30,900)
Intangible assets
Goodwill impairment losses		30,900
Impairment of intangible asset		$ 133,100
Prairie State Gaming
Reconciliation of goodwill and accumulated goodwill impairment losses
Goodwill, net	$ 22,900										$ 22,900
Goodwill, Ending Balance	22,900
Intangible assets
Intangible Assets, Net (Excluding Goodwill), Total											15,700
Other intangible assets											15,700
Expected future amortization expense
Goodwill	$ 22,900										22,900
Other intangible assets											15,700
Hollywood Gaming at Dayton Raceway And Mahoning Valley Race Course
Intangible assets
Fair value discount rate							5.00%
Hollywood Gaming at Dayton Raceway And Mahoning Valley Race Course | Indefinite-lived Intangible Assets
Intangible assets
Fair value discount rate					5.00%
Hollywood Gaming at Dayton Raceway
Reconciliation of goodwill and accumulated goodwill impairment losses
Goodwill, net							$ 15,339			15,339
Goodwill, Ending Balance							15,339
Intangible assets
Intangible Assets, Net (Excluding Goodwill), Total										110,436
Other intangible assets										110,436
Indefinite-Lived Intangible Assets (Excluding Goodwill), Total					$ 75,000
Payments for gaming license fee							50,000
Gaming license fee							25,000	25,000
Expected future amortization expense
Goodwill							15,339			15,339
Other intangible assets										110,436
Mahoning Valley Race Course
Intangible assets
Intangible Assets, Net (Excluding Goodwill), Total										125,000
Other intangible assets										125,000
Indefinite-Lived Intangible Assets (Excluding Goodwill), Total					$ 75,000
Payments for gaming license fee							50,000
Gaming license fee							25,000	$ 25,000
Expected future amortization expense
Other intangible assets										125,000
Hollywood Casino St Louis
Reconciliation of goodwill and accumulated goodwill impairment losses
Goodwill, net							205,783			205,783
Goodwill, Ending Balance							205,783
Intangible assets
Intangible Assets, Net (Excluding Goodwill), Total										58,418
Other intangible assets										58,418
Expected future amortization expense
Goodwill							205,783			205,783
Other intangible assets										58,418
Prairie State Gaming
Reconciliation of goodwill and accumulated goodwill impairment losses
Goodwill, net							22,937			22,937
Goodwill, Ending Balance							22,937
Intangible assets
Intangible Assets, Net (Excluding Goodwill), Total										15,151
Other intangible assets										15,151
Expected future amortization expense
Goodwill							22,937			22,937
Other intangible assets										15,151
Argosy Casino Riverside
Reconciliation of goodwill and accumulated goodwill impairment losses
Goodwill, net							154,332			154,332
Goodwill, Ending Balance							154,332
Intangible assets
Intangible Assets, Net (Excluding Goodwill), Total										4,964
Other intangible assets										4,964
Expected future amortization expense
Goodwill							154,332			154,332
Other intangible assets										4,964
Zia Park Casino
Reconciliation of goodwill and accumulated goodwill impairment losses
Goodwill, net							142,359			142,359
Goodwill, Ending Balance							142,359
Expected future amortization expense
Goodwill							142,359			142,359
Hollywood Casino at Penn National Race Course
Reconciliation of goodwill and accumulated goodwill impairment losses
Goodwill, net							1,497			1,497
Goodwill, Ending Balance							1,497
Intangible assets
Intangible Assets, Net (Excluding Goodwill), Total										67,607
Other intangible assets										67,607
Expected future amortization expense
Goodwill							1,497			1,497
Other intangible assets										67,607
Hollywood Casino Lawrenceburg
Reconciliation of goodwill and accumulated goodwill impairment losses
Goodwill, net							63,189			63,189
Goodwill, Ending Balance							63,189
Expected future amortization expense
Goodwill							63,189			63,189
Hollywood Casino Aurora
Reconciliation of goodwill and accumulated goodwill impairment losses
Goodwill, net							207,207			207,207
Goodwill, Ending Balance							207,207
Expected future amortization expense
Goodwill							207,207			207,207
Argosy Casino Alton
Reconciliation of goodwill and accumulated goodwill impairment losses
Goodwill, net							9,863			9,863
Goodwill, Ending Balance							9,863
Intangible assets
Intangible Assets, Net (Excluding Goodwill), Total										8,285
Other intangible assets										8,285
Expected future amortization expense
Goodwill							9,863			9,863
Other intangible assets										8,285
Tropicana Las Vegas
Reconciliation of goodwill and accumulated goodwill impairment losses
Goodwill, net							14,821			14,821
Goodwill, Ending Balance							14,821
Expected future amortization expense
Goodwill							14,821			14,821
Argosy Casino Sioux City
Intangible assets
Impairment of intangible asset									3,100
Other Reporting Units
Reconciliation of goodwill and accumulated goodwill impairment losses
Goodwill, net							8,208			8,208
Goodwill, Ending Balance							8,208
Intangible assets
Intangible Assets, Net (Excluding Goodwill), Total										1,581
Other intangible assets										1,581
Expected future amortization expense
Goodwill							8,208			8,208
Other intangible assets										1,581
Argosy Casino Sioux City Facility
Reconciliation of goodwill and accumulated goodwill impairment losses
Goodwill impairment losses				$ (20,900)					(68,700)
Intangible assets
Goodwill impairment losses				$ 20,900					$ 68,700
Boomtown Biloxi
Reconciliation of goodwill and accumulated goodwill impairment losses
Goodwill, net							22,365			22,365
Goodwill, Ending Balance							22,365
Expected future amortization expense
Goodwill							22,365			22,365
Hollywood Casino Tunica
Reconciliation of goodwill and accumulated goodwill impairment losses
Goodwill, net							44,042			44,042
Goodwill, Ending Balance							44,042
Expected future amortization expense
Goodwill							44,042			44,042
Argosy Casino Sioux City gaming license | Argosy Casino Sioux City Facility
Intangible assets
Finite-lived intangible assets, Gross Carrying Value										20,949		20,949
Finite-lived intangible assets, Accumulated Amortization										20,949		20,949
Other intangible assets
Intangible assets
Finite-lived intangible assets, Gross Carrying Value										72,223		56,126
Finite-lived intangible assets, Accumulated Amortization										56,186		55,664
Finite-lived intangible assets, Net Book Value										16,037		462
Change in indefinite life intangible assets during the period							$ (28,000)
Expected future amortization expense
Finite-lived intangible assets, Net Book Value										$ 16,037		$ 462
Customer relationships | Prairie State Gaming
Intangible assets
Finite-lived intangible assets, Net Book Value											15,700
Period of amortization	10 years
Expected future amortization expense
Finite-lived intangible assets, Net Book Value											$ 15,700

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

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