Annual report pursuant to Section 13 and 15(d)

FAIR VALUE MEASUREMENTS (Fair Value of Assets Measured on Non-recurring Basis) (Details)

v3.6.0.2
FAIR VALUE MEASUREMENTS (Fair Value of Assets Measured on Non-recurring Basis) (Details)
 3 Months Ended 12 Months Ended
Sep. 30, 2016
USD ($)
Jun. 30, 2015
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Impairment charge, investments in nonconsolidated affiliates $ 15,100,000   $ 16,455,000    
Gain on consolidation of nonconsolidated affiliates   $ 10,000,000   $ 9,124,000 $ 16,400,000
Impairment charge, definite-lived intangible assets         11,100,000
Impairment charge, goodwill     0 0 134,961,000
Impairment charge, indefinite-lived intangible assets     0 0 $ 6,000,000
Fair Value, Measurements, Nonrecurring [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Investments in nonconsolidated affiliates     0 0  
Fair Value, Measurements, Nonrecurring [Member] | Level 1 [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Investments in nonconsolidated affiliates     0 0  
Fair Value, Measurements, Nonrecurring [Member] | Level 2 [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Investments in nonconsolidated affiliates     0 0  
Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Investments in nonconsolidated affiliates     $ 0 $ 0  
Artist Nation [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Number of businesses consolidated         2
Operating Segments [Member] | Artist Nation [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Impairment charge, goodwill         $ 17,948,000
Operating Segments [Member] | Concerts [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Impairment charge, goodwill         $ 117,013,000