Subsequent Events - Additional Information (Details)	Jan. 03, 2017	Dec. 31, 2016	Aug. 31, 2016	Oct. 02, 2015
Old Bay
Subsequent Event [Line Items]
Equity method investment, ownership percentage			50.00%
Saratoga Casino Holdings LLC
Subsequent Event [Line Items]
Equity method investment, ownership percentage		25.00%		25.00%
Saratoga Casino Holdings LLC | Subsequent Event
Subsequent Event [Line Items]
Equity method investment, ownership percentage	25.00%
Ocean Downs | Subsequent Event
Subsequent Event [Line Items]
Equity method investment, ownership percentage through other investments	12.50%
Equity method investment, effective ownership percentage	62.50%