Business Operations - Dover International Speedway (Details) - item		1 Months Ended	6 Months Ended
	Jun. 23, 2019	Jul. 31, 2012	Jun. 30, 2019
Business Operations
Number of events promoted			6
RFGV Festivals
Business Operations
Number of years Firefly Music Festival hosted			5 years
Number of options granted to extend rent agreement			2
NASCAR Monster Energy Cup Series events
Business Operations
Number of events promoted			2
NASCAR XFINITY Series events
Business Operations
Number of events promoted			2
NASCAR Gander Outdoors Truck Series event
Business Operations
Number of events promoted			1
NASCAR K&N Pro Series East event
Business Operations
Number of events promoted			1
Firefly Music Festival ("Firefly")
Business Operations
Number of years Firefly Music Festival hosted			8 years
Number of days the event is held		3 days
Number of music acts featured in the event	120	40