Summary of Significant Accounting Policies - Promotional Allowances (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018
Promotional allowances
Promotion value excluded from revenue	$ 35,424	$ 69,063
Cost of complimentary services	10,681	20,861
Lodging
Promotional allowances
Promotion value excluded from revenue	10,616	20,303
Cost of complimentary services	1,541	2,818
Food And Beverage
Promotional allowances
Promotion value excluded from revenue	23,775	46,750
Cost of complimentary services	8,857	17,467
Other
Promotional allowances
Promotion value excluded from revenue	1,033	2,010
Cost of complimentary services	$ 283	$ 576
Penn Interactive Ventures
Revenue Recognition
Average redemption period of virtual playing credits		3 days