Segment Information - Additional Information (Details)	12 Months Ended
	Dec. 31, 2017 employee Segment	Jan. 03, 2017	Oct. 02, 2015	Dec. 31, 2012
Segment Reporting Information [Line Items]
Number of operating segments | Segment	6
Miami Valley Gaming LLC
Segment Reporting Information [Line Items]
Equity method investment, ownership percentage	50.00%			50.00%
Ocean Downs and Racing Services
Segment Reporting Information [Line Items]
Equity method investment, ownership percentage	62.50%	62.50%
Saratoga
Segment Reporting Information [Line Items]
Equity method investment, ownership percentage	25.00%	25.00%	25.00%
Big Fish Games
Segment Reporting Information [Line Items]
Number of employees | employee	700