Quarterly report pursuant to Section 13 or 15(d)

REVENUE RECOGNITION (Deferred Revenue) (Details)

v3.10.0.1
REVENUE RECOGNITION (Deferred Revenue) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Dec. 31, 2016
Deferred Revenue Arrangement [Line Items]            
Deferred revenue $ 890,783   $ 890,783   $ 925,220 $ 805,000
Recognition of Deferred Revenue 177,463 $ 169,140 871,430 $ 751,806    
Concerts [Member]            
Deferred Revenue Arrangement [Line Items]            
Recognition of Deferred Revenue 166,381 163,958 809,930 705,675    
Sponsorship & Advertising [Member]            
Deferred Revenue Arrangement [Line Items]            
Recognition of Deferred Revenue 3,062 1,307 20,350 16,466    
Ticketing [Member]            
Deferred Revenue Arrangement [Line Items]            
Recognition of Deferred Revenue 7,820 3,823 39,559 28,922    
Other and Corporate [Member]            
Deferred Revenue Arrangement [Line Items]            
Recognition of Deferred Revenue $ 200 $ 52 $ 1,591 $ 743