Long-term Debt - Other Long-term Obligations (Details) $ in Thousands	1 Months Ended	3 Months Ended			6 Months Ended
	Jan. 31, 2015 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Sep. 30, 2014 USD ($) payment	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Debt Instrument [Line Items]
Long-term debt		$ 2,589,732			$ 2,589,732		$ 2,453,388
Other long-term obligations
Debt Instrument [Line Items]
Long-term debt		96,644			96,644		104,583
Other long-term obligations | Ohio relocation fees debt
Debt Instrument [Line Items]
Long-term debt		84,000			84,000		91,300
Amount payable upon opening of the facility				$ 7,500
Number of semi-annual payments | payment				18
Amount of semi-annual payments due beginning one year from commencement of operations				$ 4,800
Effective yield				5.00%
Interest expense		1,100	$ 1,200		2,200	$ 2,500
Other long-term obligations | Event center debt
Debt Instrument [Line Items]
Long-term debt		$ 12,600			$ 12,600		$ 13,200
Effective yield	3.00%
Periodic payment amount	$ 1,000
Debt term	20 years