Other and Intangible Assets, Net - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Impairment charges	$ 3,787		$ 13,602
Trade Names and Loyalty Program
Trade names and customer loyalty program
Amortization expense	2,400	$ 1,700	5,100	$ 3,300
Remainder of 2018	3,000		3,000
2019	11,900		11,900
2020	8,800		8,800
2021	7,200		7,200
2022	$ 4,200		4,200
Vicksburg's | Churchill Downs Incorporated
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Impairment charges			$ 9,800