Goodwill and Other Intangible Assets - Additional Information (Details)	3 Months Ended	12 Months Ended
	Sep. 30, 2017 USD ($)	Dec. 31, 2018 USD ($) reporting_unit	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Schedule Of Intangible Assets [Line Items]
Increase in intangible assets		$ 1,434,300,000
Purchase of intangible assets		81,604,000	$ 1,652,000	$ 2,667,000
Impairment charges on other intangible assets		$ 0	0	0
Weighted-average remaining amortization period		3 years 6 months
Intangible asset amortization expense		$ 17,100,000	18,900,000	$ 9,300,000
Goodwill [Line Items]
Goodwill impairment charges	$ 18,000,000.0	$ 18,026,000	$ 18,026,000
Number of reporting units with negative carrying values | reporting_unit		6
Tropicana Las Vegas
Goodwill [Line Items]
Goodwill impairment charges	14,800,000
Sanford Orlando Kennel Club
Goodwill [Line Items]
Goodwill impairment charges	$ 3,200,000
Gaming licenses | York County, Pennsylvania
Schedule Of Intangible Assets [Line Items]
Purchase of intangible assets		$ 50,100,000
Gaming licenses | Berks County, Pennsylvania
Schedule Of Intangible Assets [Line Items]
Purchase of intangible assets		7,500,000
Gaming licenses | Pennsylvania
Schedule Of Intangible Assets [Line Items]
Purchase of intangible assets		$ 20,000,000.0