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Acquisitions and Divestitures Investment in and Divestiture of Business (Details) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2019 USD ($) property	Mar. 31, 2018 USD ($) $ / shares	Dec. 31, 2018 USD ($)	Oct. 15, 2018 USD ($)	Sep. 17, 2018 USD ($)	Jun. 01, 2018 USD ($)
Business Acquisition [Line Items]
Revenues	$ 827,288	$ 606,118
Business Acquisition, Pro Forma Revenue		815,834
Number of Lattner Gaming Units | property	1,000
Number of Lattner Locations | property	220
Gross Revenues	$ 827,288	606,118
Goodwill, net	1,088,500		$ 1,062,102
Depreciation and amortization	67,253	51,276
Net income	45,451	41,399
Project development, preopening and writedowns	4,031	3,440
Business Acquisition, Pro Forma Net Income (Loss)		$ 44,845
Business Acquisition, Pro Forma Earnings Per Share, Basic | $ / shares		$ 0.39
Business Acquisition, Pro Forma Earnings Per Share, Diluted | $ / shares		$ 0.39
Penn National Gaming, Inc. [Domain]
Business Acquisition [Line Items]
Revenues	160,558
Business Combination, Assets and Liabilities Arising from Contingencies, Amount Recognized, Net				$ 568,300
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Land				7,350
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets				64,604
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment				166,600
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets				629,876
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities				54,585
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities				57,832
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities				112,417
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net				517,459
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net				607,299
Goodwill, net				89,840
Net income	12,656
Project development, preopening and writedowns	1,000	$ 500
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets				(28)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill				398,700
Valley Forge Convention Center Partners, L.P. [Domain]
Business Acquisition [Line Items]
Revenues	41,191
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets					$ 29,909
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment					56,500
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets					226,194
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities					12,968
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities					606
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities					13,574
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net					212,620
Business Combination, Net Purchase Price					266,600
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net					291,364
Goodwill, net					78,744
Net income	6,828
Project development, preopening and writedowns	300	$ 400
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets					3,185
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill					136,600
Lattner Entertainment Group Illinois, LLC [Domain]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets						$ 10,638
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment						9,307
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets						79,908
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities						1,062
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities						1,062
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net						78,846
Business Combination, Net Purchase Price						100,000
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net						110,538
Goodwill, net						31,692
Project development, preopening and writedowns	$ 200
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets						1,963
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill						58,000
Project development, preopening and writedown		no
Land | Valley Forge Convention Center Partners, L.P. [Domain]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Land					15,200
Buildings and improvements | Penn National Gaming, Inc. [Domain]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment				89,150
Buildings and improvements | Valley Forge Convention Center Partners, L.P. [Domain]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment					32,900
Buildings and improvements | Lattner Entertainment Group Illinois, LLC [Domain]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment						66
Furniture and equipment | Penn National Gaming, Inc. [Domain]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment				65,200
Furniture and equipment | Valley Forge Convention Center Partners, L.P. [Domain]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment					7,971
Furniture and equipment | Lattner Entertainment Group Illinois, LLC [Domain]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment						9,241
Construction in progress | Penn National Gaming, Inc. [Domain]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, CIP				4,900
Construction in progress | Valley Forge Convention Center Partners, L.P. [Domain]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, CIP					429
As Previously Reported [Member] | Penn National Gaming, Inc. [Domain]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets				64,604
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment				167,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets				646,976
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities				54,585
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities				57,832
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities				112,417
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net				534,559
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net				607,299
Goodwill, net				72,740
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets				(28)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill				415,400
As Previously Reported [Member] | Valley Forge Convention Center Partners, L.P. [Domain]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets					29,909
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment					56,500
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets					235,492
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities					12,968
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities					606
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities					13,574
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net					221,918
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net					291,364
Goodwill, net					69,446
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets					483
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill					148,600
As Previously Reported [Member] | Lattner Entertainment Group Illinois, LLC [Domain]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets						10,638
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment						9,307
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets						79,908
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities						1,062
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities						1,062
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net						78,846
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net						110,538
Goodwill, net						31,692
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets						1,963
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill						58,000
Adjustments [Member] | Penn National Gaming, Inc. [Domain]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets				0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment				(400)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets				(17,100)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities				0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities				0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities				0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net				(17,100)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net				0
Goodwill, net				17,100
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets				0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill				(16,700)
Adjustments [Member] | Valley Forge Convention Center Partners, L.P. [Domain]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets					0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment					0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets					(9,298)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities					0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities					0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities					0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net					(9,298)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net					0
Goodwill, net					9,298
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets					2,702
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill					(12,000)
Adjustments [Member] | Lattner Entertainment Group Illinois, LLC [Domain]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets						0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment						0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets						0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities						0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities						0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net						0
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net						0
Goodwill, net						0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets						0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill						0
Customer Relationships [Member] | Penn National Gaming, Inc. [Domain]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life			4 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill				41,200
Customer Relationships [Member] | Valley Forge Convention Center Partners, L.P. [Domain]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life			5 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill					16,100
Host Relationships [Domain] | Lattner Entertainment Group Illinois, LLC [Domain]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life			15 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill						$ 58,000
Trademarks | Penn National Gaming, Inc. [Domain]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill				43,000
Trademarks | Valley Forge Convention Center Partners, L.P. [Domain]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill					12,500
Gaming License Rights | Penn National Gaming, Inc. [Domain]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill				$ 314,500
Gaming License Rights | Valley Forge Convention Center Partners, L.P. [Domain]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill					$ 108,000
As Previously Reported [Member]
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue		$ 606,118
Business Acquisition, Pro Forma Net Income (Loss)		$ 41,399
Business Acquisition, Pro Forma Earnings Per Share, Basic | $ / shares		$ 0.36
Business Acquisition, Pro Forma Earnings Per Share, Diluted | $ / shares		$ 0.36
Adjustments [Member]
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue		$ 209,716
Business Acquisition, Pro Forma Net Income (Loss)		$ 3,446
Minimum [Member] | Buildings and improvements | Penn National Gaming, Inc. [Domain]
Business Acquisition [Line Items]
Property, Plant and Equipment, Useful Life			15 years
Minimum [Member] | Buildings and improvements | Valley Forge Convention Center Partners, L.P. [Domain]
Business Acquisition [Line Items]
Property, Plant and Equipment, Useful Life			15 years
Minimum [Member] | Buildings and improvements | Lattner Entertainment Group Illinois, LLC [Domain]
Business Acquisition [Line Items]
Property, Plant and Equipment, Useful Life			15 years
Minimum [Member] | Furniture and Equipment [Member] | Penn National Gaming, Inc. [Domain]
Business Acquisition [Line Items]
Property, Plant and Equipment, Useful Life			2 years
Minimum [Member] | Furniture and Equipment [Member] | Valley Forge Convention Center Partners, L.P. [Domain]
Business Acquisition [Line Items]
Property, Plant and Equipment, Useful Life			2 years
Minimum [Member] | Furniture and Equipment [Member] | Lattner Entertainment Group Illinois, LLC [Domain]
Business Acquisition [Line Items]
Property, Plant and Equipment, Useful Life			3 years
Maximum [Member] | Buildings and improvements | Penn National Gaming, Inc. [Domain]
Business Acquisition [Line Items]
Property, Plant and Equipment, Useful Life			40 years
Maximum [Member] | Buildings and improvements | Valley Forge Convention Center Partners, L.P. [Domain]
Business Acquisition [Line Items]
Property, Plant and Equipment, Useful Life			40 years
Maximum [Member] | Buildings and improvements | Lattner Entertainment Group Illinois, LLC [Domain]
Business Acquisition [Line Items]
Property, Plant and Equipment, Useful Life			45 years
Maximum [Member] | Furniture and Equipment [Member] | Penn National Gaming, Inc. [Domain]
Business Acquisition [Line Items]
Property, Plant and Equipment, Useful Life			10 years
Maximum [Member] | Furniture and Equipment [Member] | Valley Forge Convention Center Partners, L.P. [Domain]
Business Acquisition [Line Items]
Property, Plant and Equipment, Useful Life			6 years
Maximum [Member] | Furniture and Equipment [Member] | Lattner Entertainment Group Illinois, LLC [Domain]
Business Acquisition [Line Items]
Property, Plant and Equipment, Useful Life			7 years

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