Investment In and Advances to Unconsolidated Affiliates (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) ft² item	Jun. 30, 2017 USD ($)
Summary financial information
Net income attributable to Penn	$ 5,734	$ 5,021	$ 11,095	$ 9,569
Kansas Entertainment
Business ventures
Ownership interest in joint venture under agreement of sale (as a percent)	50.00%		50.00%
Area of Casino (in square foot) | ft²			244,791
Number of slot machines | item			2,000
Number of table games | item			41
Number of poker tables | item			12
Number of space parking | item			1,253
Summary financial information
Net revenues	$ 40,206	38,924	$ 79,491	77,770
Operating expenses	27,924	28,352	55,582	57,190
Income from operations	12,282	10,572	23,909	20,580
Net income	12,282	10,572	23,909	20,580
Net income attributable to Penn	$ 6,141	$ 5,286	$ 11,955	$ 10,290