Summary of Significant Accounting Policies - Revenue Recognition and Complimentaries (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($)
Revenue from External Customer [Line Items]
Total complimentaries associated with gaming contracts	$ 206,137
Virtual playing credits
Revenue from External Customer [Line Items]
Contract term	three days
Food and beverage
Revenue from External Customer [Line Items]
Total complimentaries associated with gaming contracts	$ 137,179
Hotel
Revenue from External Customer [Line Items]
Total complimentaries associated with gaming contracts	60,859
Other
Revenue from External Customer [Line Items]
Total complimentaries associated with gaming contracts	$ 8,099