Business Operations (Details) - Dover Facility - item		1 Months Ended	6 Months Ended
	Jun. 18, 2017	Jul. 31, 2012	Jun. 30, 2017
Business Operations
Number of events scheduled to be promoted			6
RFGV Festivals
Business Operations
Number of options granted to extend rent agreement			2
Period of option to extend our facility rental agreement through 2032			5 years
RFGV Festivals | Maximum
Business Operations
Number of events scheduled to be promoted			2
NASCAR Cup Series Events
Business Operations
Number of events scheduled to be promoted			2
NASCAR XFINITY Series events
Business Operations
Number of events scheduled to be promoted			2
NASCAR Camping World Truck Series event
Business Operations
Number of events scheduled to be promoted			1
NASCAR K&N Pro Series East event
Business Operations
Number of events scheduled to be promoted			1
Firefly Music Festival ("Firefly")
Business Operations
Number of years Firefly Music Festival hosted			6 years
Number of days the event is held		3 days
Number of music acts featured in the event		40
Firefly Music Festival ("Firefly") | Minimum
Business Operations
Number of music acts featured in the event	140