Subsequent Events - Additional Information (Details) - USD ($) $ in Millions	Jan. 11, 2019	Jul. 06, 2018	Jan. 25, 2019	Dec. 31, 2018	Oct. 30, 2018	Oct. 29, 2018	Dec. 31, 2017
Subsequent Event [Line Items]
Common stock, shares authorized (in shares)				150,000,000	150,000,000	50,000,000	150,000,000
Subsequent Event
Subsequent Event [Line Items]
Common stock, shares authorized (in shares)			150,000,000
Presque Isle Downs & Casino
Subsequent Event [Line Items]
Consideration to be paid		$ 178.9
Presque Isle Downs & Casino | Subsequent Event
Subsequent Event [Line Items]
Consideration to be paid	$ 178.9