Summary of Significant Accounting Policies - Promotional Allowances (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018
Promotional allowances
Promotion value excluded from revenue	$ 42,744	$ 111,807
Cost of complimentary services	13,564	34,422
Lodging
Promotional allowances
Promotion value excluded from revenue	10,490	30,793
Cost of complimentary services	1,481	4,302
Food And Beverage
Promotional allowances
Promotion value excluded from revenue	30,567	77,317
Cost of complimentary services	11,509	28,969
Other
Promotional allowances
Promotion value excluded from revenue	1,687	3,697
Cost of complimentary services	$ 574	$ 1,151
Penn Interactive Ventures
Virtual Playing Credits [Abstract]
Average redemption period of virtual playing credits		3 days